collision – Swiftest

Definition of classes and methods used to determine close encounters NetCDF dimension and variable names for the enounter save object

Uses

- encounter
- base
- globals
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Solid arrows point from a submodule to the (sub)module which it is descended from. Dashed arrows point from a module or program unit to modules which it uses.

Used by

Variables

Type	Visibility	Attributes		Name		Initial
character(len=STRMAX),	public		::	COLLISION_LOG_OUT			Name of log file for collision diagnostic information (each co-image gets its own)
character(len=*),	public,	parameter	::	COLLISION_LOG_OUT	=	"collisions.log"	Name of log file for collision diagnostic information
character(len=*),	public,	parameter	::	COLLISION_OUTFILE	=	'collisions.nc'	Name of NetCDF output file for collision information
integer(kind=I4B),	public,	parameter	::	COLLRESOLVE_REGIME_DISRUPTION	=	2
integer(kind=I4B),	public,	parameter	::	COLLRESOLVE_REGIME_GRAZE_AND_MERGE	=	4
integer(kind=I4B),	public,	parameter	::	COLLRESOLVE_REGIME_HIT_AND_RUN	=	5
integer(kind=I4B),	public,	parameter	::	COLLRESOLVE_REGIME_MERGE	=	1	Symbolic names for collisional outcomes
integer(kind=I4B),	public,	parameter	::	COLLRESOLVE_REGIME_SUPERCATASTROPHIC	=	3
real(kind=DP),	public,	parameter	::	MAX_ROT_SI	=	7.108e-4*RAD2DEG	Rotational limit in deg/s of cohesionless body from Holsapple (2007)
integer(kind=I4B),	public,	parameter	::	REGIME_CB_IMPACT	=	6
integer(kind=I4B),	public,	parameter	::	REGIME_EJECTED	=	7
character(len=NAMELEN),	public,	parameter, dimension(7)	::	REGIME_NAMES	=	[REGIME_NAME_MERGE, REGIME_NAME_DISRUPTION, REGIME_NAME_SUPERCATASTROPHIC, REGIME_NAME_GRAZE_AND_MERGE, REGIME_NAME_HIT_AND_RUN, REGIME_NAME_CB_IMPACT, REGIME_NAME_EJECTED]
character(len=NAMELEN),	public,	parameter	::	REGIME_NAME_CB_IMPACT	=	"Central Body Impact"
character(len=NAMELEN),	public,	parameter	::	REGIME_NAME_DISRUPTION	=	"Disruption"
character(len=NAMELEN),	public,	parameter	::	REGIME_NAME_EJECTED	=	"Ejected"
character(len=NAMELEN),	public,	parameter	::	REGIME_NAME_GRAZE_AND_MERGE	=	"Graze and Merge"
character(len=NAMELEN),	public,	parameter	::	REGIME_NAME_HIT_AND_RUN	=	"Hit and Run"
character(len=NAMELEN),	public,	parameter	::	REGIME_NAME_MERGE	=	"Merge"
character(len=NAMELEN),	public,	parameter	::	REGIME_NAME_SUPERCATASTROPHIC	=	"Supercatastrophic"

Interfaces

interface

public module subroutine collision_check_plpl(self, nbody_system, param, t, dt, irec, lany_collision)

Arguments

Type	Intent		Name
class(collision_list_plpl),	intent(inout)	::	self	encounter list object
class(base_nbody_system),	intent(inout)	::	nbody_system	Swiftest nbody system object
class(base_parameters),	intent(inout)	::	param	Current run configuration parameters
real(kind=DP),	intent(in)	::	t	current time
real(kind=DP),	intent(in)	::	dt	step size
integer(kind=I4B),	intent(in)	::	irec	Current recursion level
logical,	intent(out)	::	lany_collision	Returns true if any pair of encounters resulted in a collision

interface

public module subroutine collision_check_pltp(self, nbody_system, param, t, dt, irec, lany_collision)

Arguments

Type	Intent		Name
class(collision_list_pltp),	intent(inout)	::	self	encounter list object
class(base_nbody_system),	intent(inout)	::	nbody_system	Swiftest nbody system object
class(base_parameters),	intent(inout)	::	param	Current run configuration parameters
real(kind=DP),	intent(in)	::	t	current time
real(kind=DP),	intent(in)	::	dt	step size
integer(kind=I4B),	intent(in)	::	irec	Current recursion level
logical,	intent(out)	::	lany_collision	Returns true if any pair of encounters resulted in a collision

interface

public module subroutine collision_generate_basic(self, nbody_system, param, t)

Arguments

Type	Intent		Name
class(collision_basic),	intent(inout)	::	self	Merge fragment nbody_system object
class(base_nbody_system),	intent(inout)	::	nbody_system	Swiftest nbody system object
class(base_parameters),	intent(inout)	::	param	Current run configuration parameters
real(kind=DP),	intent(in)	::	t	The time of the collision

interface

public module subroutine collision_generate_bounce(self, nbody_system, param, t)

Arguments

Type	Intent		Name
class(collision_bounce),	intent(inout)	::	self	Bounce fragment nbody_system object
class(base_nbody_system),	intent(inout)	::	nbody_system	Swiftest nbody system object
class(base_parameters),	intent(inout)	::	param	Current run configuration parameters
real(kind=DP),	intent(in)	::	t	The time of the collision

interface

public module subroutine collision_generate_hitandrun(self, nbody_system, param, t)

Arguments

Type	Intent		Name
class(collision_basic),	intent(inout)	::	self
class(base_nbody_system),	intent(inout)	::	nbody_system	Swiftest nbody system object
class(base_parameters),	intent(inout)	::	param	Current run configuration parameters with SyMBA additions
real(kind=DP),	intent(in)	::	t	Time of collision

interface

public module subroutine collision_generate_merge(self, nbody_system, param, t)

Arguments

Type	Intent		Name
class(collision_basic),	intent(inout)	::	self	Merge fragment nbody_system object
class(base_nbody_system),	intent(inout)	::	nbody_system	Swiftest nbody system object
class(base_parameters),	intent(inout)	::	param	Current run configuration parameters
real(kind=DP),	intent(in)	::	t	The time of the collision

interface

public module subroutine collision_io_collider_message(pl, collidx, collider_message)

Arguments

Type	Intent	Attributes		Name
class(base_object),	intent(in)		::	pl	Swiftest massive body object
integer(kind=I4B),	intent(in),	dimension(:)	::	collidx	Index of collisional colliders%idx members
character(len=*),	intent(inout)		::	collider_message	The message to print to the screen.

interface

public module subroutine collision_io_log_regime(impactors)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_impactors),	intent(inout)			::	impactors	Collision system object

interface

public module subroutine collision_io_netcdf_dump(self, param)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_storage),	intent(inout)			::	self	Collision storage object
class(base_parameters),	intent(inout)			::	param	Current run configuration parameters

interface

public module subroutine collision_io_netcdf_initialize_output(self, param)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_netcdf_parameters),	intent(inout)			::	self	Parameters used to identify a particular NetCDF dataset
class(base_parameters),	intent(in)			::	param	Current run configuration parameters

interface

public module subroutine collision_io_netcdf_open(self, param, readonly)

Arguments

Type	Intent	Optional		Name
class(collision_netcdf_parameters),	intent(inout)		::	self	Parameters used to identify a particular NetCDF dataset
class(base_parameters),	intent(in)		::	param	Current run configuration parameters
logical,	intent(in),	optional	::	readonly	Logical flag indicating that this should be open read only

interface

public module subroutine collision_io_netcdf_write_frame_snapshot(self, history, param)

Arguments

Type	Intent		Name
class(collision_snapshot),	intent(in)	::	self	Swiftest encounter structure
class(encounter_storage),	intent(inout)	::	history	Collision history object
class(base_parameters),	intent(inout)	::	param	Current run configuration parameters

interface

public module subroutine collision_regime_collider(self, nbody_system, param)

Arguments

Type	Intent		Name
class(collision_basic),	intent(inout)	::	self	Collision system object
class(base_nbody_system),	intent(in)	::	nbody_system	Swiftest nbody system object
class(base_parameters),	intent(in)	::	param	Current Swiftest run configuration parameters

interface

public module subroutine collision_resolve_consolidate_impactors(self, nbody_system, param, idx_parent, lflag)

Arguments

Type	Intent	Attributes		Name
class(collision_impactors),	intent(out)		::	self	Collision impactors object
class(base_nbody_system),	intent(inout)		::	nbody_system	Swiftest nbody system object
class(base_parameters),	intent(in)		::	param	Current run configuration parameters with Swiftest additions
integer(kind=I4B),	intent(inout),	dimension(:)	::	idx_parent	Index of the two bodies considered the “parents” of the collision
logical,	intent(out)		::	lflag	Logical flag indicating whether a impactors%id was successfully created or not

interface

public module subroutine collision_resolve_extract_plpl(self, nbody_system, param)

Arguments

Type	Intent		Name
class(collision_list_plpl),	intent(inout)	::	self	pl-pl encounter list
class(base_nbody_system),	intent(inout)	::	nbody_system	Swiftest nbody system object
class(base_parameters),	intent(in)	::	param	Current run configuration parameters

interface

public module subroutine collision_resolve_extract_pltp(self, nbody_system, param)

Arguments

Type	Intent		Name
class(collision_list_pltp),	intent(inout)	::	self	pl-tp encounter list
class(base_nbody_system),	intent(inout)	::	nbody_system	Swiftest nbody system object
class(base_parameters),	intent(in)	::	param	Current run configuration parameters

interface

public module subroutine collision_resolve_make_impactors_pl(pl, idx)

Arguments

Type	Intent	Optional	Attributes		Name
class(base_object),	intent(inout)			::	pl	Massive body object
integer(kind=I4B),	intent(in),		dimension(:)	::	idx	Array holding the indices of the two bodies involved in the collision

interface

public module subroutine collision_resolve_mergeaddsub(nbody_system, param, t, status)

Arguments

Type	Intent		Name
class(base_nbody_system),	intent(inout)	::	nbody_system	Swiftest nbody system object
class(base_parameters),	intent(inout)	::	param	Current run configuration parameters with Swiftest additions
real(kind=DP),	intent(in)	::	t	Time of collision
integer(kind=I4B),	intent(in)	::	status	Status flag to assign to adds

interface

public module subroutine collision_resolve_plpl(self, nbody_system, param, t, dt, irec)

Arguments

Type	Intent		Name
class(collision_list_plpl),	intent(inout)	::	self	pl-pl encounter list
class(base_nbody_system),	intent(inout)	::	nbody_system	Swiftest nbody system object
class(base_parameters),	intent(inout)	::	param	Current run configuration parameters with Swiftest additions
real(kind=DP),	intent(in)	::	t	Current simulation time
real(kind=DP),	intent(in)	::	dt	Current simulation step size
integer(kind=I4B),	intent(in)	::	irec	Current recursion level

interface

public module subroutine collision_resolve_pltp(self, nbody_system, param, t, dt, irec)

pl-tp encounter list

Arguments

Type	Intent		Name
class(collision_list_pltp),	intent(inout)	::	self	Swiftest nbody system object
class(base_nbody_system),	intent(inout)	::	nbody_system	Current run configuration parameters with Swiftest additions
class(base_parameters),	intent(inout)	::	param	Current simulation time
real(kind=DP),	intent(in)	::	t	Current simulation step size
real(kind=DP),	intent(in)	::	dt	Current recursion level
integer(kind=I4B),	intent(in)	::	irec

interface

public module subroutine collision_util_add_fragments_to_collider(self, nbody_system, param)

Arguments

Type	Intent		Name
class(collision_basic),	intent(in)	::	self	Collision system object
class(base_nbody_system),	intent(inout)	::	nbody_system	Swiftest nbody system object
class(base_parameters),	intent(in)	::	param	Current Swiftest run configuration parameters

interface

public module subroutine collision_util_bounce_one(r, v, rcom, vcom, radius)

Arguments

Type	Intent	Attributes		Name
real(kind=DP),	intent(inout),	dimension(:)	::	r
real(kind=DP),	intent(inout),	dimension(:)	::	v
real(kind=DP),	intent(in),	dimension(:)	::	rcom
real(kind=DP),	intent(in),	dimension(:)	::	vcom
real(kind=DP),	intent(in)		::	radius

interface

public module subroutine collision_util_dealloc_basic(self)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_basic),	intent(inout)			::	self	Collision system object

interface

public module subroutine collision_util_dealloc_fragments(self)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_fragments),	intent(inout)			::	self

interface

public module subroutine collision_util_dealloc_impactors(self)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_impactors),	intent(inout)			::	self	Collision system object

interface

public module subroutine collision_util_dealloc_snapshot(self)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_snapshot),	intent(inout)			::	self	Collsion snapshot object

interface

public module subroutine collision_util_get_energy_and_momentum(self, nbody_system, param, phase)

Arguments

Type	Intent		Name
class(collision_basic),	intent(inout)	::	self	Encounter collision system object
class(base_nbody_system),	intent(inout)	::	nbody_system	Swiftest nbody system object
class(base_parameters),	intent(inout)	::	param	Current Swiftest run configuration parameters
character(len=*),	intent(in)	::	phase	One of “before” or “after”, indicating which phase of the calculation this needs to be done

interface

public module subroutine collision_util_get_idvalues_snapshot(self, idvals)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_snapshot),	intent(in)			::	self	Collision snapshot object
integer(kind=I4B),	intent(out),		dimension(:), allocatable	::	idvals	Array of all id values saved in this snapshot

interface

public module subroutine collision_util_index_map(self)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_storage),	intent(inout)			::	self	Collision storage object

interface

public module subroutine collision_util_reset_fragments(self)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_fragments),	intent(inout)			::	self

interface

public module subroutine collision_util_save_energy_snapshot(self, stage, nbody_system, iframe_start, iframe_end)

Arguments

Type	Intent		Name
class(collision_storage),	intent(inout)	::	self	Collision storage object with snapshots
character(len=*),	intent(in)	::	stage	Phase of the collision, either ‘before’ or ‘after’
class(base_nbody_system),	intent(inout)	::	nbody_system	Swiftest nbody system object with energy information stored in it
integer(kind=I4B),	intent(in)	::	iframe_start	Starting frame index to save the snapshot
integer(kind=I4B),	intent(in)	::	iframe_end	Ending frame index to save the snapshot

interface

public module subroutine collision_util_set_coordinate_collider(self)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_basic),	intent(inout)			::	self	collisional system

interface

public module subroutine collision_util_set_coordinate_fragments(self)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_fragments),	intent(inout)			::	self	Collisional nbody_system

interface

public module subroutine collision_util_set_coordinate_impactors(self)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_impactors),	intent(inout)			::	self	collisional system

interface

public module subroutine collision_util_set_natural_scale_factors(self)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_basic),	intent(inout)			::	self	collision system object

interface

public module subroutine collision_util_set_original_scale_factors(self)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_basic),	intent(inout)			::	self	collision system object

interface

public module subroutine collision_util_setup_collider(self, nbody_system, param)

Arguments

Type	Intent		Name
class(collision_basic),	intent(inout)	::	self	Encounter collision system object
class(base_nbody_system),	intent(in)	::	nbody_system	Current nbody system. Used as a mold for the before/after snapshots
class(base_parameters),	intent(inout)	::	param	Current Swiftest run configuration parameters

interface

public module subroutine collision_util_setup_fragments(self, n)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_fragments),	intent(inout)			::	self	Swiftest generic body object
integer(kind=I4B),	intent(in)			::	n	Number of particles to allocate space for

interface

public module subroutine collision_util_setup_fragments_collider(self, nfrag)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_basic),	intent(inout)			::	self	Encounter collision system object
integer(kind=I4B),	intent(in)			::	nfrag	Number of fragments to create

interface

public module subroutine collision_util_setup_impactors_collider(self)

Arguments

Type	Intent	Optional	Attributes		Name
class(collision_basic),	intent(inout)			::	self	Encounter collision system object

interface

public module subroutine collision_util_shift_vector_to_origin(m_frag, vec_frag)

Arguments

Type	Intent	Optional	Attributes		Name
real(kind=DP),	intent(in),		dimension(:)	::	m_frag	Fragment masses
real(kind=DP),	intent(inout),		dimension(:,:)	::	vec_frag	Fragment positions or velocities in the center of mass frame

interface

public module subroutine collision_util_take_snapshot(self, param, nbody_system, t, arg)

Arguments

Type	Intent	Optional		Name
class(collision_storage),	intent(inout)		::	self	Swiftest storage object
class(base_parameters),	intent(inout)		::	param	Current run configuration parameters
class(base_nbody_system),	intent(inout)		::	nbody_system	Swiftest nbody system object to store
real(kind=DP),	intent(in),	optional	::	t	Time of snapshot if different from nbody_system time
character(len=*),	intent(in),	optional	::	arg	“before”: takes a snapshot just before the collision. “after” takes the snapshot just after the collision.

interface

public module subroutine collision_util_velocity_torque(dL, mass, r, v)

Arguments

Type	Intent	Attributes		Name
real(kind=DP),	intent(in),	dimension(:)	::	dL	Change in angular momentum to apply
real(kind=DP),	intent(in)		::	mass	Mass of body
real(kind=DP),	intent(in),	dimension(:)	::	r	Position of body wrt system center of mass
real(kind=DP),	intent(inout),	dimension(:)	::	v	Velocity of body wrt system center of mass

Derived Types

type, public :: collision_basic

This class defines a collisional system that stores impactors and fragments. This is written so that various collision models (i.e. Fraggle) could potentially be used to resolve collision by defining extended types of encounters_impactors and/or encounetr_fragments

Components

Type	Visibility	Attributes		Name		Initial
real(kind=DP),	public		::	Escale	=	1.0_DP	Angular momentum scale factor (a convenience unit that is derived from dscale, tscale, and mscale)
real(kind=DP),	public,	dimension(NDIM,2)	::	L_orbit			Before/after rotational angular momentum
real(kind=DP),	public,	dimension(NDIM,2)	::	L_rot			Before/after total nbody_system angular momentum
real(kind=DP),	public,	dimension(NDIM,2)	::	L_total			Before/after orbital kinetic energy
real(kind=DP),	public		::	Lscale	=	1.0_DP	Before/after orbital angular momentum fers to the entire n-body system in its pre-collisional state and index 2 refers to the system in its post-collisional state
class(base_nbody_system),	public,	allocatable	::	after			Status flag to pass to the collision list once the collision has been resolved
real(kind=DP),	public,	dimension(2)	::	be			Before/after total system energy
class(base_nbody_system),	public,	allocatable	::	before			A snapshot of the subset of the nbody_system containing products of the collision
integer(kind=I4B),	public		::	collision_id			The current maximum collision id number
real(kind=DP),	public		::	dscale	=	1.0_DP	Mass scale factor
class(collision_fragments),	public,	allocatable	::	fragments			Object containing information on the post-collision system
class(collision_impactors),	public,	allocatable	::	impactors			A snapshot of the subset of the nbody_system involved in the collision
real(kind=DP),	public,	dimension(2)	::	ke_orbit			Before/after rotational kinetic energy
real(kind=DP),	public,	dimension(2)	::	ke_rot			Before/after potential energy
real(kind=DP),	public		::	max_rot	=	0.0_DP	Distance dimension scale factor
integer(kind=I4B),	public		::	maxid_collision	=	0	Minimum fragment mass
real(kind=DP),	public		::	min_mfrag	=	0.0_DP	Maximum rotation rate (in system or natural units, depending on )
real(kind=DP),	public		::	mscale	=	1.0_DP	Time scale factor
real(kind=DP),	public,	dimension(2)	::	pe			Before/after binding energy
integer(kind=I4B),	public		::	status			ID number of this collision event
real(kind=DP),	public,	dimension(2)	::	te
real(kind=DP),	public		::	tscale	=	1.0_DP	Velocity scale factor (a convenience unit that is derived from dscale and tscale)
real(kind=DP),	public		::	vscale	=	1.0_DP	Energy scale factor (a convenience unit that is derived from dscale, tscale, and mscale)

Finalizations Procedures

final :: collision_final_basic

Type-Bound Procedures

procedure, public :: add_fragments => collision_util_add_fragments_to_collider	../../../../ Add fragments to nbody_system
procedure, public :: dealloc => collision_util_dealloc_basic	../../../../ Deallocates all allocatables
procedure, public :: generate => collision_generate_basic	../../../../ Merges the impactors to make a single final body
procedure, public :: get_energy_and_momentum => collision_util_get_energy_and_momentum	../../../../ Calculates total nbody_system energy in either the pre-collision outcome state (lbefore = .true.) or the post-collision outcome state (lbefore = .false.)
procedure, public :: get_regime => collision_regime_collider	../../../../ Determine which fragmentation regime the set of impactors will be
procedure, public :: hitandrun => collision_generate_hitandrun	../../../../ Merges the impactors to make a single final body
procedure, public :: merge => collision_generate_merge	../../../../ Merges the impactors to make a single final body
procedure, public :: set_coordinate_system => collision_util_set_coordinate_collider	../../../../ Sets the coordinate system of the collisional system
procedure, public :: set_natural_scale => collision_util_set_natural_scale_factors	../../../../ Scales dimenional quantities to ~O(1) with respect to the collisional system.
procedure, public :: set_original_scale => collision_util_set_original_scale_factors	../../../../ Restores dimenional quantities back to the original system units
procedure, public :: setup => collision_util_setup_collider	../../../../ Initializer for the encounter collision system and the before/after snapshots
procedure, public :: setup_fragments => collision_util_setup_fragments_collider	../../../../ Initializer for the fragments of the collision system.
procedure, public :: setup_impactors => collision_util_setup_impactors_collider	../../../../ Initializer for the impactors for the encounter collision system. Deallocates old impactors before creating new ones

type, public, extends(collision_basic) :: collision_bounce

If a collision would result in a disruption, “bounce” the bodies instead.

Components

Type	Visibility	Attributes		Name		Initial
real(kind=DP),	public		::	Escale	=	1.0_DP	Angular momentum scale factor (a convenience unit that is derived from dscale, tscale, and mscale)
real(kind=DP),	public,	dimension(NDIM,2)	::	L_orbit			Before/after rotational angular momentum
real(kind=DP),	public,	dimension(NDIM,2)	::	L_rot			Before/after total nbody_system angular momentum
real(kind=DP),	public,	dimension(NDIM,2)	::	L_total			Before/after orbital kinetic energy
real(kind=DP),	public		::	Lscale	=	1.0_DP	Before/after orbital angular momentum fers to the entire n-body system in its pre-collisional state and index 2 refers to the system in its post-collisional state
class(base_nbody_system),	public,	allocatable	::	after			Status flag to pass to the collision list once the collision has been resolved
real(kind=DP),	public,	dimension(2)	::	be			Before/after total system energy
class(base_nbody_system),	public,	allocatable	::	before			A snapshot of the subset of the nbody_system containing products of the collision
integer(kind=I4B),	public		::	collision_id			The current maximum collision id number
real(kind=DP),	public		::	dscale	=	1.0_DP	Mass scale factor
class(collision_fragments),	public,	allocatable	::	fragments			Object containing information on the post-collision system
class(collision_impactors),	public,	allocatable	::	impactors			A snapshot of the subset of the nbody_system involved in the collision
real(kind=DP),	public,	dimension(2)	::	ke_orbit			Before/after rotational kinetic energy
real(kind=DP),	public,	dimension(2)	::	ke_rot			Before/after potential energy
real(kind=DP),	public		::	max_rot	=	0.0_DP	Distance dimension scale factor
integer(kind=I4B),	public		::	maxid_collision	=	0	Minimum fragment mass
real(kind=DP),	public		::	min_mfrag	=	0.0_DP	Maximum rotation rate (in system or natural units, depending on )
real(kind=DP),	public		::	mscale	=	1.0_DP	Time scale factor
real(kind=DP),	public,	dimension(2)	::	pe			Before/after binding energy
integer(kind=I4B),	public		::	status			ID number of this collision event
real(kind=DP),	public,	dimension(2)	::	te
real(kind=DP),	public		::	tscale	=	1.0_DP	Velocity scale factor (a convenience unit that is derived from dscale and tscale)
real(kind=DP),	public		::	vscale	=	1.0_DP	Energy scale factor (a convenience unit that is derived from dscale, tscale, and mscale)

Type-Bound Procedures

procedure, public :: add_fragments => collision_util_add_fragments_to_collider	../../../../ Add fragments to nbody_system
procedure, public :: dealloc => collision_util_dealloc_basic	../../../../ Deallocates all allocatables
procedure, public :: generate => collision_generate_bounce
procedure, public :: get_energy_and_momentum => collision_util_get_energy_and_momentum	../../../../ Calculates total nbody_system energy in either the pre-collision outcome state (lbefore = .true.) or the post-collision outcome state (lbefore = .false.)
procedure, public :: get_regime => collision_regime_collider	../../../../ Determine which fragmentation regime the set of impactors will be
procedure, public :: hitandrun => collision_generate_hitandrun	../../../../ Merges the impactors to make a single final body
procedure, public :: merge => collision_generate_merge	../../../../ Merges the impactors to make a single final body
procedure, public :: set_coordinate_system => collision_util_set_coordinate_collider	../../../../ Sets the coordinate system of the collisional system
procedure, public :: set_natural_scale => collision_util_set_natural_scale_factors	../../../../ Scales dimenional quantities to ~O(1) with respect to the collisional system.
procedure, public :: set_original_scale => collision_util_set_original_scale_factors	../../../../ Restores dimenional quantities back to the original system units
procedure, public :: setup => collision_util_setup_collider	../../../../ Initializer for the encounter collision system and the before/after snapshots
procedure, public :: setup_fragments => collision_util_setup_fragments_collider	../../../../ Initializer for the fragments of the collision system.
procedure, public :: setup_impactors => collision_util_setup_impactors_collider	../../../../ Initializer for the impactors for the encounter collision system. Deallocates old impactors before creating new ones

type, public, extends(base_object) :: collision_fragments

Class definition for the variables that describe a collection of fragments in barycentric coordinates

Components

Type	Visibility	Attributes		Name		Initial
real(kind=DP),	public,	dimension(:), allocatable	::	Gmass			G*mass of fragments
real(kind=DP),	public,	dimension(:,:), allocatable	::	Ip			Principal axes moment of inertia for fragments
real(kind=DP),	public,	dimension(:,:), allocatable	::	L_orbit			Orbital angular momentum vector of each individual fragment
real(kind=DP),	public,	dimension(NDIM)	::	L_orbit_tot			Orbital angular momentum vector of all fragments
real(kind=DP),	public,	dimension(:,:), allocatable	::	L_rot			Rotational angular momentum vector of each individual fragment
real(kind=DP),	public,	dimension(NDIM)	::	L_rot_tot			Rotational angular momentum vector of all fragments
real(kind=DP),	public		::	be			Binding energy of all fragments
real(kind=DP),	public,	dimension(:), allocatable	::	density			Radii of fragments
integer(kind=I4B),	public,	dimension(:), allocatable	::	id			Identifier
class(base_particle_info),	public,	dimension(:), allocatable	::	info			Particle metadata information
real(kind=DP),	public,	dimension(:), allocatable	::	ke_orbit			Orbital kinetic energy of each individual fragment
real(kind=DP),	public		::	ke_orbit_tot			Orbital kinetic energy of all fragments
real(kind=DP),	public,	dimension(:), allocatable	::	ke_rot			Rotational kinetic energy of each individual fragment
real(kind=DP),	public		::	ke_rot_tot			Rotational kinetic energy of all fragments
real(kind=DP),	public,	dimension(:), allocatable	::	mass			masses of fragments
real(kind=DP),	public		::	mtot			Total mass of fragments
real(kind=DP),	public,	dimension(:,:), allocatable	::	n_unit			Array of normal direction unit vectors of individual fragments in the collisional coordinate frame
integer(kind=I4B),	public		::	nbody	=	0	Number of bodies
integer(kind=I4B),	public,	dimension(:), allocatable	::	origin_body			Array of indices indicating which impactor body (1 or 2) the fragment originates from
real(kind=DP),	public		::	pe			Potential energy of all fragments
real(kind=DP),	public,	dimension(:,:), allocatable	::	r_unit			Array of radial direction unit vectors of individual fragments in the collisional coordinate frame
real(kind=DP),	public,	dimension(:), allocatable	::	radius			Radii of fragments
real(kind=DP),	public,	dimension(:,:), allocatable	::	rb			Barycentric position
real(kind=DP),	public,	dimension(:,:), allocatable	::	rc			Position vectors in the collision coordinate frame
real(kind=DP),	public,	dimension(:,:), allocatable	::	rh			Heliocentric position
real(kind=DP),	public,	dimension(:), allocatable	::	rmag			Array of radial distance magnitudes of individual fragments in the collisional coordinate frame
real(kind=DP),	public,	dimension(:,:), allocatable	::	rot			rotation vectors of fragments
real(kind=DP),	public,	dimension(:), allocatable	::	rotmag			Array of rotation magnitudes of individual fragments
integer(kind=I4B),	public,	dimension(:), allocatable	::	status			An integrator-specific status indicator
real(kind=DP),	public,	dimension(:,:), allocatable	::	t_unit			Array of tangential direction unit vectors of individual fragments in the collisional coordinate frame
real(kind=DP),	public,	dimension(:,:), allocatable	::	v_unit			Array of velocity direction unit vectors of individual fragments in the collisional coordinate frame
real(kind=DP),	public,	dimension(:,:), allocatable	::	vb			Barycentric velocity
real(kind=DP),	public,	dimension(:,:), allocatable	::	vc			Velocity vectors in the collision coordinate frame
real(kind=DP),	public,	dimension(:,:), allocatable	::	vh			Heliocentric velocity
real(kind=DP),	public,	dimension(:), allocatable	::	vmag			Array of radial distance magnitudes of individual fragments in the collisional coordinate frame

Finalizations Procedures

final :: collision_final_fragments	Finalizer deallocates all allocatables

Type-Bound Procedures

procedure, public :: dealloc => collision_util_dealloc_fragments	../../../../ Deallocates all allocatable arrays and sets everything else to 0
procedure, public :: reset => collision_util_reset_fragments
procedure, public :: set_coordinate_system => collision_util_set_coordinate_fragments	../../../../ Sets the coordinate system of the fragments
procedure, public :: setup => collision_util_setup_fragments	../../../../ Allocates all allocatables radius, or other values that get set prior to the call to fraggle_generate) Resets all position and velocity-dependent fragment quantities in order to do a fresh calculation (does not reset mass,

type, public, extends(base_object) :: collision_impactors

Class definition for the variables that describe the bodies involved in the collision

Components

Type	Visibility	Attributes		Name
real(kind=DP),	public,	dimension(2)	::	Gmass	Two-body equivalent G*mass of the collider bodies prior to the collision
real(kind=DP),	public,	dimension(NDIM,2)	::	Ip	Two-body equivalent principal axes moments of inertia the collider bodies prior to collision
real(kind=DP),	public,	dimension(NDIM,2)	::	L_orbit	Two-body equivalent orbital angular momentum vectors of the collider bodies prior to collision
real(kind=DP),	public,	dimension(NDIM,2)	::	L_rot	Two-body equivalent rotational angular momentum vectors of the collider bodies prior to collision
real(kind=DP),	public		::	Mcb	Mass of central body (used to compute potential energy in regime determination)
real(kind=DP),	public		::	Qloss	Energy lost during the collision
real(kind=DP),	public,	dimension(2)	::	be	Binding energy of each individual impactor
real(kind=DP),	public,	dimension(NDIM)	::	bounce_unit	The impact point velocity vector is the component of the velocity in the distance vector direction
integer(kind=I4B),	public,	dimension(:), allocatable	::	id	Index of bodies involved in the collision
real(kind=DP),	public,	dimension(2)	::	ke_orbit	Orbital kinetic energy of each individual impactor
real(kind=DP),	public,	dimension(2)	::	ke_rot	Rotational kinetic energy of each individual impactor
real(kind=DP),	public,	dimension(2)	::	mass	Two-body equivalent mass of the collider bodies prior to the collision
real(kind=DP),	public,	dimension(:), allocatable	::	mass_dist	Distribution of fragment mass determined by the regime calculation (largest fragment, second largest, and remainder)
integer(kind=I4B),	public		::	ncoll	Number of bodies involved in the collision
real(kind=DP),	public,	dimension(2)	::	radius	Two-body equivalent radii of the collider bodies prior to the collision
real(kind=DP),	public,	dimension(NDIM,2)	::	rb	Two-body equivalent position vectors of the collider bodies prior to collision in system barycentric coordinates
real(kind=DP),	public,	dimension(NDIM)	::	rbcom	Center of mass position vector of the collider nbody_system in nbody_system barycentric coordinates
real(kind=DP),	public,	dimension(NDIM,2)	::	rc	Two-body equivalent position vectors of the collider bodies prior to collision in collision center of mass coordinates
real(kind=DP),	public,	dimension(NDIM)	::	rcimp	Impact point position vector of the collider nbody_system in nbody_system barycentric coordinates
integer(kind=I4B),	public		::	regime	Collresolve regime code for this collision
real(kind=DP),	public,	dimension(NDIM,2)	::	rot	Two-body equivalent principal axes moments of inertia the collider bodies prior to collision
real(kind=DP),	public,	dimension(NDIM)	::	v_unit	velocity direction unit vector of collisional system
real(kind=DP),	public,	dimension(NDIM,2)	::	vb	Two-body equivalent velocity vectors of the collider bodies prior to collision in system barycentric coordinate
real(kind=DP),	public,	dimension(NDIM)	::	vbcom	Velocity vector of the center of mass of the collider nbody_system in nbody_system barycentric coordinates
real(kind=DP),	public,	dimension(NDIM,2)	::	vc	Two-body equivalent velocity vectors of the collider bodies prior to collision in collision center of mass coordinates
real(kind=DP),	public,	dimension(NDIM)	::	x_unit	x-direction unit vector of collisional system ed on the collider barycenter and collisional system unit vectors
real(kind=DP),	public,	dimension(NDIM)	::	y_unit	y-direction unit vector of collisional system
real(kind=DP),	public,	dimension(NDIM)	::	z_unit	z-direction unit vector of collisional system

Finalizations Procedures

final :: collision_final_impactors	Finalizer will deallocate all allocatables

Type-Bound Procedures

procedure, public :: consolidate => collision_resolve_consolidate_impactors	../../../../ Consolidates a multi-body collision into an equivalent 2-body collision
procedure, public :: dealloc => collision_util_dealloc_impactors	../../../../ Resets the collider object variables to 0 and deallocates the index and mass distributions
procedure, public :: set_coordinate_system => collision_util_set_coordinate_impactors	../../../../ Sets the coordinate system of the impactors

type, public, extends(encounter_list) :: collision_list_plpl

Swiftest class for tracking pl-pl close encounters in a step when collisions are possible

Components

Type	Visibility	Attributes		Name		Initial
integer(kind=I4B),	public,	dimension(:), allocatable	::	id1			id of the first body in the encounter
integer(kind=I4B),	public,	dimension(:), allocatable	::	id2			id of the second body in the encounter
integer(kind=I4B),	public,	dimension(:), allocatable	::	index1			position of the first body in the encounter
integer(kind=I4B),	public,	dimension(:), allocatable	::	index2			position of the second body in the encounter
logical,	public,	dimension(:), allocatable	::	lclosest			indicates that thie pair of bodies is in currently at its closest approach point
logical,	public		::	lcollision			Indicates if the encounter resulted in at least one collision
integer(kind=I4B),	public,	dimension(:), allocatable	::	level			Recursion level (used in SyMBA)
logical,	public,	dimension(:), allocatable	::	lvdotr			relative vdotr flag
integer(kind=I8B),	public		::	nenc	=	0	Total number of encounters
real(kind=DP),	public,	dimension(:,:), allocatable	::	r1			the position of body 1 in the encounter
real(kind=DP),	public,	dimension(:,:), allocatable	::	r2			the position of body 2 in the encounter
integer(kind=I4B),	public,	dimension(:), allocatable	::	status			status of the interaction
real(kind=DP),	public		::	t			Time of encounter
real(kind=DP),	public,	dimension(:), allocatable	::	tcollision			Time of collision
real(kind=DP),	public,	dimension(:,:), allocatable	::	v1			the velocity of body 1 in the encounter
real(kind=DP),	public,	dimension(:,:), allocatable	::	v2			the velocity of body 2 in the encounter

Finalizations Procedures

final :: collision_final_plpl

Type-Bound Procedures

procedure, public :: append => encounter_util_append_list	../../../../ Appends elements from one structure to another
procedure, public :: collision_check => collision_check_plpl	../../../../ Checks if a test particle is going to collide with a massive body
procedure, public :: copy => encounter_util_copy_list	../../../../ Copies elements from the source encounter list into self.
procedure, public :: dealloc => encounter_util_dealloc_list	../../../../ Deallocates all allocatables
procedure, public :: extract_collisions => collision_resolve_extract_plpl	../../../../ Processes the pl-pl encounter list remove only those encounters that led to a collision
procedure, public :: resize => encounter_util_resize_list	../../../../ Checks the current size of the encounter list against the required size and extends it by a factor of 2 more than requested if it is too small.
procedure, public :: resolve_collision => collision_resolve_plpl	../../../../ Process the pl-pl collision list, then modifiy the massive bodies based on the outcome of the collision
procedure, public :: setup => encounter_util_setup_list	../../../../ A constructor that sets the number of encounters and allocates and initializes all arrays
procedure, public :: spill => encounter_util_spill_list	../../../../ “Spills” bodies from one object to another depending on the results of a mask (uses the PACK intrinsic)

type, public, extends(encounter_list) :: collision_list_pltp

Class for tracking pl-tp close encounters in a step when collisions are possible

Components

Type	Visibility	Attributes		Name		Initial
integer(kind=I4B),	public,	dimension(:), allocatable	::	id1			id of the first body in the encounter
integer(kind=I4B),	public,	dimension(:), allocatable	::	id2			id of the second body in the encounter
integer(kind=I4B),	public,	dimension(:), allocatable	::	index1			position of the first body in the encounter
integer(kind=I4B),	public,	dimension(:), allocatable	::	index2			position of the second body in the encounter
logical,	public,	dimension(:), allocatable	::	lclosest			indicates that thie pair of bodies is in currently at its closest approach point
logical,	public		::	lcollision			Indicates if the encounter resulted in at least one collision
integer(kind=I4B),	public,	dimension(:), allocatable	::	level			Recursion level (used in SyMBA)
logical,	public,	dimension(:), allocatable	::	lvdotr			relative vdotr flag
integer(kind=I8B),	public		::	nenc	=	0	Total number of encounters
real(kind=DP),	public,	dimension(:,:), allocatable	::	r1			the position of body 1 in the encounter
real(kind=DP),	public,	dimension(:,:), allocatable	::	r2			the position of body 2 in the encounter
integer(kind=I4B),	public,	dimension(:), allocatable	::	status			status of the interaction
real(kind=DP),	public		::	t			Time of encounter
real(kind=DP),	public,	dimension(:), allocatable	::	tcollision			Time of collision
real(kind=DP),	public,	dimension(:,:), allocatable	::	v1			the velocity of body 1 in the encounter
real(kind=DP),	public,	dimension(:,:), allocatable	::	v2			the velocity of body 2 in the encounter

Finalizations Procedures

final :: collision_final_pltp

Type-Bound Procedures

procedure, public :: append => encounter_util_append_list	../../../../ Appends elements from one structure to another
procedure, public :: collision_check => collision_check_pltp	../../../../ Checks if a test particle is going to collide with a massive body
procedure, public :: copy => encounter_util_copy_list	../../../../ Copies elements from the source encounter list into self.
procedure, public :: dealloc => encounter_util_dealloc_list	../../../../ Deallocates all allocatables
procedure, public :: extract_collisions => collision_resolve_extract_pltp	../../../../ Processes the pl-tp encounter list remove only those encounters that led to a collision
procedure, public :: resize => encounter_util_resize_list	../../../../ Checks the current size of the encounter list against the required size and extends it by a factor of 2 more than requested if it is too small.
procedure, public :: resolve_collision => collision_resolve_pltp	../../../../ Process the pl-tp collision list
procedure, public :: setup => encounter_util_setup_list	../../../../ A constructor that sets the number of encounters and allocates and initializes all arrays
procedure, public :: spill => encounter_util_spill_list	../../../../ “Spills” bodies from one object to another depending on the results of a mask (uses the PACK intrinsic)

type, public, extends(encounter_netcdf_parameters) :: collision_netcdf_parameters

Initialize a set of parameters used to identify a NetCDF output object

Components

Type	Visibility	Attributes		Name		Initial
integer(kind=I4B),	public		::	BE_varid			ID for the system binding energy variable
integer(kind=I4B),	public		::	E_collisions_varid			ID for the energy lost in collisions variable
character(len=NAMELEN),	public		::	E_collisions_varname	=	"E_collisions"	name of the escaped angular momentum y variable
integer(kind=I4B),	public		::	E_untracked_varid			ID for the energy that is untracked due to loss (due to mergers and body energy for escaped bodies)
character(len=NAMELEN),	public		::	E_untracked_varname	=	"E_untracked"	name of the energy that is untracked due to loss (due to mergers and body energy for escaped bodies)
integer(kind=I4B),	public		::	GMescape_varid			ID for the G*Mass of bodies that escape the system
character(len=NAMELEN),	public		::	GMescape_varname	=	"GMescape"	name of the G*Mass of bodies that escape the system
integer(kind=I4B),	public		::	Gmass_varid			ID for the G*mass variable
character(len=NAMELEN),	public		::	Gmass_varname	=	"Gmass"	name of the G*mass variable
integer(kind=I4B),	public		::	Ip_varid			ID for the axis principal moment of inertia variable
character(len=NAMELEN),	public		::	Ip_varname	=	"Ip"	name of the principal moment of inertial variable
integer(kind=I4B),	public		::	KE_orb_varid			ID for the system orbital kinetic energy variable
integer(kind=I4B),	public		::	KE_rot_varid			ID for the system rotational kinetic energy variable
integer(kind=I4B),	public		::	L_escape_varid			ID for the escaped angular momentum vector variable
character(len=NAMELEN),	public		::	L_escape_varname	=	"L_escape"	name of the escaped angular momentum vector variable
integer(kind=I4B),	public		::	L_orbit_varid			ID for the system orbital angular momentum vector variable
character(len=NAMELEN),	public		::	L_orbit_varname	=	"L_orbit"	name of the orbital angular momentum vector variable
integer(kind=I4B),	public		::	L_rot_varid			ID for the system rotational angular momentum vector variable
character(len=NAMELEN),	public		::	L_rot_varname	=	"L_rot"	name of the rotational angular momentum vector variable
integer(kind=I4B),	public		::	PE_varid			ID for the system potential energy variable
integer(kind=I4B),	public		::	Q_varid			ID for the energy dissipation variable
integer(kind=I4B),	public		::	Qloss_varid			ID for the energy loss variable
character(len=NAMELEN),	public		::	Qloss_varname	=	"Qloss"	name of the energy loss variable
integer(kind=I4B),	public		::	TE_varid			ID for the system binding energy variable
integer(kind=I4B),	public		::	a_varid			ID for the semimajor axis variable
character(len=NAMELEN),	public		::	a_varname	=	"a"	name of the semimajor axis variable
character(len=NAMELEN),	public		::	be_varname	=	"BE"	name of the system binding energy variable
integer(kind=I4B),	public		::	c_lm_varid			ID for the c_lm aqrray
character(len=NAMELEN),	public		::	c_lm_varname	=	"c_lm"	name for the c_lm array
integer(kind=I4B),	public		::	cape_varid			ID for the eccentric/hyperbolic anomaly variable
character(len=NAMELEN),	public		::	cape_varname	=	"cape"	name of the eccentric/hyperbolic anomaly variable
integer(kind=I4B),	public		::	capm_varid			ID for the mean anomaly variable
character(len=NAMELEN),	public		::	capm_varname	=	"capm"	name of the mean anomaly variable
integer(kind=I4B),	public		::	capom_varid			ID for the long. asc. node variable
character(len=NAMELEN),	public		::	capom_varname	=	"capom"	name of the long. asc. node variable
integer(kind=I4B),	public		::	collision_body_dimid			Netcdf ID for the collision body dimension
character(len=NAMELEN),	public		::	collision_body_dimname	=	"collision_body"	name of the collision body dimension
integer(kind=I4B),	public		::	collision_body_varid			Netcdf ID for the collision body variable
integer(kind=I4B),	public		::	collision_id_dimid			ID for the collision event dimension
character(len=NAMELEN),	public		::	collision_id_dimname	=	"collision_id"	name of the collision id variable
integer(kind=I4B),	public		::	collision_id_varid			Netcdf ID for the origin collision ID
integer(kind=I4B),	public		::	discard_body_id_varid			ID for the id of the other body involved in the discard
character(len=NAMELEN),	public		::	discard_body_id_varname	=	"discard_body_id"	name of the id of the other body involved in the discard
integer(kind=I4B),	public		::	discard_rh_varid			ID for the heliocentric position vector of the body at the time of discard variable
character(len=NAMELEN),	public		::	discard_rh_varname	=	"discard_rh"	name of the heliocentric position vector of the body at the time of discard variable
integer(kind=I4B),	public		::	discard_time_varid			ID for the time of discard variable
character(len=NAMELEN),	public		::	discard_time_varname	=	"discard_time"	name of the time of discard variable
integer(kind=I4B),	public		::	discard_vh_varid			ID for the heliocentric velocity vector of the body at the time of discard variable
character(len=NAMELEN),	public		::	discard_vh_varname	=	"discard_vh"	name of the heliocentric velocity vector of the body at the time of discard variable
integer(kind=I4B),	public		::	e_varid			ID for the eccentricity variable
character(len=NAMELEN),	public		::	e_varname	=	"e"	name of the eccentricity variable
integer(kind=I4B),	public		::	f_varid			ID for the true anomaly variable
character(len=NAMELEN),	public		::	f_varname	=	"f"	name of the true anomaly variable
character(len=STRMAX),	public		::	file_name			Name of the output file
integer(kind=I4B),	public		::	gr_pseudo_vh_varid			ID for the heliocentric pseudovelocity vector variable (used in GR)
character(len=NAMELEN),	public		::	gr_pseudo_vh_varname	=	"gr_pseudo_vh"	name of the heliocentric pseudovelocity vector variable (GR)
integer(kind=I4B),	public		::	id			ID for the output file
integer(kind=I4B),	public		::	id_varid			ID for the id variable
character(len=NAMELEN),	public		::	id_varname	=	"id"	name of the particle id variable
integer(kind=I4B),	public		::	idslot	=	1	The current id slot that gets passed to the NetCDF reader/writer
integer(kind=I4B),	public,	dimension(:), allocatable	::	idvals			Array of id values in this NetCDF file
integer(kind=I4B),	public		::	inc_varid			ID for the inclination variable
character(len=NAMELEN),	public		::	inc_varname	=	"inc"	name of the inclination variable
integer(kind=I4B),	public		::	j2rp2_varid			ID for the j2 variable
character(len=NAMELEN),	public		::	j2rp2_varname	=	"j2rp2"	name of the j2rp2 variable
integer(kind=I4B),	public		::	j4rp4_varid			ID for the j4 variable
character(len=NAMELEN),	public		::	j4rp4_varname	=	"j4rp4"	name of the j4pr4 variable
integer(kind=I4B),	public		::	k2_varid			ID for the Love number variable
character(len=NAMELEN),	public		::	k2_varname	=	"k2"	name of the Love number variable
character(len=NAMELEN),	public		::	ke_orbit_varname	=	"KE_orbit"	name of the system orbital kinetic energy variable
character(len=NAMELEN),	public		::	ke_rot_varname	=	"KE_rot"	name of the system rotational kinetic energy variable
integer(kind=I4B),	public		::	l_dim_max	=	6	Maximum value of the l dimension
integer(kind=I4B),	public		::	l_dimid			ID for the l dimension for c_lm
character(len=NAMELEN),	public		::	l_dimname	=	"l"	name of l dimension for c_lm
integer(kind=I4B),	public		::	l_varid			ID for the l variable
integer(kind=I4B),	public		::	lam_varid			ID for the mean longitude variable
character(len=NAMELEN),	public		::	lam_varname	=	"lam"	name of the mean longitude variable
logical,	public		::	lc_lm_exists	=	.false.	Logical flag to indicate whether or not the c_lm array was present in an old file.
logical,	public		::	lfile_is_open	=	.false.	Flag indicating that the linked file is currently open
logical,	public		::	lpseudo_vel_exists	=	.false.	Logical flag to indicate whether or not the pseudovelocity vectors were present in an old file.
integer(kind=I4B),	public		::	m_dim_max	=	6	Maximum value of the m dimension
integer(kind=I4B),	public		::	m_dimid			ID for the m dimension for c_lm
character(len=NAMELEN),	public		::	m_dimname	=	"m"	name of m dimension for c_lm
integer(kind=I4B),	public		::	m_varid			ID for the m variable
integer(kind=I4B),	public		::	mass_varid			ID for the mass variable
character(len=NAMELEN),	public		::	mass_varname	=	"mass"	name of the mass variable
integer(kind=I4B),	public		::	max_idslot	=	0	Records the last index value of id in the NetCDF file
integer(kind=I4B),	public		::	max_tslot	=	0	Records the last index value of time in the NetCDF file
integer(kind=I4B),	public		::	name_dimid			ID for the particle name dimension
character(len=NAMELEN),	public		::	name_dimname	=	"name"	name of the particle name dimension
integer(kind=I4B),	public		::	name_varid			ID for the particle name variable
integer(kind=I4B),	public		::	npl_varid			ID for the number of active massive bodies variable
character(len=NAMELEN),	public		::	npl_varname	=	"npl"	name of the number of active massive bodies variable
integer(kind=I4B),	public		::	nplm_varid			ID for the number of active fully interacting massive bodies variable (SyMBA)
character(len=NAMELEN),	public		::	nplm_varname	=	"nplm"	name of the number of active fully interacting massive bodies variable (SyMBA)
integer(kind=I4B),	public		::	ntp_varid			ID for the number of active test particles variable
character(len=NAMELEN),	public		::	ntp_varname	=	"ntp"	name of the number of active test particles variable
integer(kind=I4B),	public		::	omega_varid			ID for the arg. of periapsis variable
character(len=NAMELEN),	public		::	omega_varname	=	"omega"	name of the arg. of periapsis variable
integer(kind=I4B),	public		::	origin_rh_varid			ID for the origin position vector variable
character(len=NAMELEN),	public		::	origin_rh_varname	=	"origin_rh"	name of the heliocentric position vector of the body at the time of origin variable
integer(kind=I4B),	public		::	origin_time_varid			ID for the origin time
character(len=NAMELEN),	public		::	origin_time_varname	=	"origin_time"	name of the time of origin variable
integer(kind=I4B),	public		::	origin_type_varid			ID for the origin type
character(len=NAMELEN),	public		::	origin_type_varname	=	"origin_type"	name of the origin type variable
integer(kind=I4B),	public		::	origin_vh_varid			ID for the origin velocity vector component
character(len=NAMELEN),	public		::	origin_vh_varname	=	"origin_vh"	name of the heliocentric velocity vector of the body at the time of origin variable
integer(kind=I4B),	public		::	out_type			output type (will be assigned either NF90_DOUBLE or NF90_FLOAT, depending on the user parameter)
character(len=NAMELEN),	public		::	pe_varname	=	"PE"	name of the system potential energy variable
integer(kind=I4B),	public		::	ptype_varid			ID for the particle type variable
character(len=NAMELEN),	public		::	ptype_varname	=	"particle_type"	name of the particle type variable
character(len=NAMELEN),	public		::	q_varname	=	"Q"	name of the energy dissipation variable
integer(kind=I4B),	public		::	radius_varid			ID for the radius variable
character(len=NAMELEN),	public		::	radius_varname	=	"radius"	name of the radius variable
integer(kind=I4B),	public		::	regime_varid			ID for the collision regime variable
character(len=NAMELEN),	public		::	regime_varname	=	"regime"	name of the collision regime variable
integer(kind=I4B),	public		::	rh_varid			ID for the heliocentric position vector variable
character(len=NAMELEN),	public		::	rh_varname	=	"rh"	name of the heliocentric position vector variable
integer(kind=I4B),	public		::	rhill_varid			ID for the hill radius variable
character(len=NAMELEN),	public		::	rhill_varname	=	"rhill"	name of the hill radius variable
integer(kind=I4B),	public		::	rot_varid			ID for the rotation vector variable
character(len=NAMELEN),	public		::	rot_varname	=	"rot"	name of the rotation vector variable
integer(kind=I4B),	public		::	rotphase_varid			ID for the rotation phase variable
character(len=NAMELEN),	public		::	rotphase_varname	=	"rotphase"	name of the rotation phase variable
integer(kind=I4B),	public,	dimension(2)	::	sign_coords	=	[-1, 1]	The sign dimension coordinate labels
integer(kind=I4B),	public		::	sign_dimid			ID for sign dimension
character(len=NAMELEN),	public		::	sign_dimname	=	"sign"	name of the sign dimension for c_lm
integer(kind=I4B),	public		::	sign_varid			ID for sign variable
character(len=1),	public,	dimension(3)	::	space_coords	=	["x", "y", "z"]	The space dimension coordinate labels
integer(kind=I4B),	public		::	space_dimid			ID for the space dimension
character(len=NAMELEN),	public		::	space_dimname	=	"space"	name of the space dimension
integer(kind=I4B),	public		::	space_varid			ID for the space variable
character(len=6),	public,	dimension(2)	::	stage_coords	=	["before", "after "]	The stage coordinate labels
integer(kind=I4B),	public		::	stage_dimid			ID for the stage dimension
character(len=NAMELEN),	public		::	stage_dimname	=	"stage"	name of the stage dimension (before/after)
integer(kind=I4B),	public		::	stage_varid			ID for the stage variable
integer(kind=I4B),	public		::	status_varid			ID for the status variable
character(len=NAMELEN),	public		::	status_varname	=	"status"	name of the particle status variable
integer(kind=I4B),	public		::	str_dimid			ID for the character string dimension
character(len=NAMELEN),	public		::	str_dimname	=	"string32"	name of the character string dimension
character(len=NAMELEN),	public		::	te_varname	=	"TE"	name of the system binding energy variable
integer(kind=I4B),	public		::	time_dimid			ID for the time dimension
character(len=NAMELEN),	public		::	time_dimname	=	"time"	name of the time dimension
integer(kind=I4B),	public		::	time_varid			ID for the time variable
integer(kind=I4B),	public		::	tslot	=	1	The current time slot that gets passed to the NetCDF reader/writer
integer(kind=I4B),	public		::	varpi_varid			ID for the long. of periapsis variable
character(len=NAMELEN),	public		::	varpi_varname	=	"varpi"	name of the long. of periapsis variable
integer(kind=I4B),	public		::	vh_varid			ID for the heliocentric velocity vector variable
character(len=NAMELEN),	public		::	vh_varname	=	"vh"	name of the heliocentric velocity vector variable

Type-Bound Procedures

procedure, public :: close => netcdf_io_close	../../../../ Closes an open NetCDF file
procedure, public :: find_idslot => netcdf_io_find_idslot	../../../../ Finds the id dimension index for a given value of id
procedure, public :: find_tslot => netcdf_io_find_tslot	../../../../ Finds the time dimension index for a given value of t
procedure, public :: get_idvals => netcdf_io_get_idvals	../../../../ Gets the valid id numbers currently stored in this dataset
procedure, public :: initialize => collision_io_netcdf_initialize_output	../../../../ Opens an old file
procedure, public :: open => collision_io_netcdf_open
procedure, public :: sync => netcdf_io_sync	../../../../ Syncrhonize the disk and memory buffer of the NetCDF file (e.g. commit the frame files stored in memory to disk)

type, public, extends(encounter_snapshot) :: collision_snapshot

Indicates that this snapshot contains at least one collision

Components

Type	Visibility	Attributes		Name
class(collision_basic),	public,	allocatable	::	collider	Collider object at this snapshot
integer(kind=I8B),	public		::	iloop	Loop number at time of snapshot
logical,	public		::	lcollision
class(base_object),	public,	allocatable	::	pl	Massive body data structure
real(kind=DP),	public		::	t	Simulation time when snapshot was taken
class(base_object),	public,	allocatable	::	tp	Test particle data structure

Type-Bound Procedures

procedure, public :: dealloc => collision_util_dealloc_snapshot	../../../../ Deallocates all allocatables
procedure, public :: get_idvals => collision_util_get_idvalues_snapshot	../../../../ Gets an array of all id values saved in this snapshot
procedure, public :: write_frame => collision_io_netcdf_write_frame_snapshot	../../../../ Writes a frame of encounter data to file

type, public, extends(encounter_storage) :: collision_storage

A class that that is used to store simulation history data between file output Dumps contents of encounter history to file

Components

Type	Visibility	Attributes		Name		Initial
type(base_storage_frame),	public,	dimension(:), allocatable	::	frame			Array of stored frames
integer(kind=I4B),	public,	dimension(:), allocatable	::	idmap			The id value -> index map
integer(kind=I4B),	public,	dimension(:), allocatable	::	idvals			The set of unique id values contained in the snapshots
integer(kind=I4B),	public		::	iframe	=	0	Index of the last frame stored in the system
class(encounter_netcdf_parameters),	public,	allocatable	::	nc			NetCDF object attached to this storage object
integer(kind=I4B),	public		::	nframes			Total number of frames that can be stored An class that establishes the pattern for various storage objects
integer(kind=I4B),	public		::	nid			Number of unique id values in all saved snapshots
integer(kind=I4B),	public		::	nt			Number of unique time values in all saved snapshots
integer(kind=I4B),	public,	dimension(:), allocatable	::	tmap			The t value -> index map
real(kind=DP),	public,	dimension(:), allocatable	::	tvals			The set of unique time values contained in the snapshots

Type-Bound Procedures

procedure, public :: dealloc => encounter_util_dealloc_storage	../../../../ Deallocates all allocatables
procedure, public :: dump => collision_io_netcdf_dump	../../../../ Take a minimal snapshot of the nbody_system through an encounter
procedure, public :: get_index_values => encounter_util_get_vals_storage	../../../../ Gets the unique values of the indices of a storage object (i.e. body id or time value)
procedure, public :: make_index_map => collision_util_index_map
procedure, public :: reset => base_util_reset_storage	../../../../ Resets the storage object back to its original state by removing all of the saved items from the storage frames
procedure, public :: resize => base_util_resize_storage	../../../../ Resizes storage if it is too small
procedure, public :: save => base_util_snapshot_save	../../../../ Takes a snapshot of the current system
procedure, public :: save_energy_snapshot => collision_util_save_energy_snapshot	../../../../ Maps body id values to storage index values so we don’t have to use unlimited dimensions for id
procedure, public :: setup => base_util_setup_storage	../../../../ Sets up a storage system with a set number of frames
procedure, public :: take_snapshot => collision_util_take_snapshot	../../../../ Maps body id values to storage index values so we don’t have to use unlimited dimensions for id