encounter Module

  • The Purdue Swiftest Team - David A. Minton, Carlisle A. Wishard, Jennifer L.L. Pouplin, and Jacob R. Elliott
  • 314 statements
  • Source File

Definition of classes and methods used to determine close encounters


Uses

  • module~~encounter~~UsesGraph module~encounter encounter globals globals module~encounter->globals module~base base module~encounter->module~base module~netcdf_io netcdf_io module~encounter->module~netcdf_io module~base->globals module~coarray coarray module~base->module~coarray module~netcdf_io->globals module~netcdf_io->module~base module~coarray->globals

Used by

  • module~~encounter~~UsedByGraph module~encounter encounter module~collision collision module~collision->module~encounter module~s_encounter_check s_encounter_check module~s_encounter_check->module~encounter module~swiftest swiftest module~s_encounter_check->module~swiftest module~s_encounter_io s_encounter_io module~s_encounter_io->module~encounter module~s_encounter_io->module~swiftest module~s_encounter_util s_encounter_util module~s_encounter_util->module~encounter module~s_encounter_util->module~swiftest module~swiftest->module~encounter module~swiftest->module~collision module~bindings_module bindings_module module~bindings_module->module~swiftest module~fraggle fraggle module~fraggle->module~swiftest module~helio helio module~helio->module~swiftest module~whm whm module~helio->module~whm module~rmvs rmvs module~rmvs->module~swiftest module~rmvs->module~whm module~s_coarray_clone s_coarray_clone module~s_coarray_clone->module~swiftest module~s_coarray_collect s_coarray_collect module~s_coarray_collect->module~swiftest module~s_collision_check s_collision_check module~s_collision_check->module~collision module~s_collision_check->module~swiftest module~symba symba module~s_collision_check->module~symba module~s_collision_generate s_collision_generate module~s_collision_generate->module~collision module~s_collision_generate->module~swiftest module~s_collision_io s_collision_io module~s_collision_io->module~collision module~s_collision_io->module~swiftest module~s_collision_regime s_collision_regime module~s_collision_regime->module~collision module~s_collision_regime->module~swiftest module~s_collision_resolve s_collision_resolve module~s_collision_resolve->module~collision module~s_collision_resolve->module~swiftest module~s_collision_util s_collision_util module~s_collision_util->module~collision module~s_collision_util->module~swiftest module~s_fraggle_generate s_fraggle_generate module~s_fraggle_generate->module~swiftest module~s_fraggle_generate->module~fraggle module~s_fraggle_generate->module~symba module~s_fraggle_util s_fraggle_util module~s_fraggle_util->module~swiftest module~s_fraggle_util->module~fraggle module~s_helio_drift s_helio_drift module~s_helio_drift->module~swiftest module~s_helio_drift->module~helio module~s_helio_gr s_helio_gr module~s_helio_gr->module~swiftest module~s_helio_gr->module~helio module~s_helio_kick s_helio_kick module~s_helio_kick->module~swiftest module~s_helio_kick->module~helio module~s_helio_step s_helio_step module~s_helio_step->module~swiftest module~s_helio_step->module~helio module~s_helio_util s_helio_util module~s_helio_util->module~swiftest module~s_helio_util->module~helio module~s_operator_cross s_operator_cross module~s_operator_cross->module~swiftest module~s_rmvs_discard s_rmvs_discard module~s_rmvs_discard->module~swiftest module~s_rmvs_discard->module~rmvs module~s_rmvs_encounter_check s_rmvs_encounter_check module~s_rmvs_encounter_check->module~swiftest module~s_rmvs_encounter_check->module~rmvs module~s_rmvs_kick s_rmvs_kick module~s_rmvs_kick->module~swiftest module~s_rmvs_kick->module~rmvs module~s_rmvs_step s_rmvs_step module~s_rmvs_step->module~swiftest module~s_rmvs_step->module~rmvs module~s_rmvs_util s_rmvs_util module~s_rmvs_util->module~swiftest module~s_rmvs_util->module~rmvs module~s_shgrav_accel s_shgrav_accel module~s_shgrav_accel->module~swiftest module~shgrav shgrav module~s_shgrav_accel->module~shgrav module~s_shgrav_pot s_shgrav_pot module~s_shgrav_pot->module~swiftest module~s_shgrav_pot->module~shgrav module~s_swiftest_coarray s_swiftest_coarray module~s_swiftest_coarray->module~swiftest module~s_swiftest_discard s_swiftest_discard module~s_swiftest_discard->module~swiftest module~s_swiftest_drift s_swiftest_drift module~s_swiftest_drift->module~swiftest module~s_swiftest_driver s_swiftest_driver module~s_swiftest_driver->module~swiftest module~s_swiftest_gr s_swiftest_gr module~s_swiftest_gr->module~swiftest module~s_swiftest_io s_swiftest_io module~s_swiftest_io->module~swiftest module~s_swiftest_io->module~symba module~s_swiftest_kick s_swiftest_kick module~s_swiftest_kick->module~swiftest module~s_swiftest_obl s_swiftest_obl module~s_swiftest_obl->module~swiftest module~s_swiftest_obl->module~shgrav module~s_swiftest_orbel s_swiftest_orbel module~s_swiftest_orbel->module~swiftest module~s_swiftest_user s_swiftest_user module~s_swiftest_user->module~swiftest module~s_swiftest_util s_swiftest_util module~s_swiftest_util->module~swiftest module~s_swiftest_util->module~fraggle module~s_swiftest_util->module~helio module~s_swiftest_util->module~rmvs module~s_swiftest_util->module~symba module~s_swiftest_util->module~whm module~s_symba_discard s_symba_discard module~s_symba_discard->module~swiftest module~s_symba_discard->module~symba module~s_symba_drift s_symba_drift module~s_symba_drift->module~swiftest module~s_symba_drift->module~symba module~s_symba_encounter_check s_symba_encounter_check module~s_symba_encounter_check->module~swiftest module~s_symba_encounter_check->module~symba module~s_symba_gr s_symba_gr module~s_symba_gr->module~swiftest module~s_symba_gr->module~symba module~s_symba_kick s_symba_kick module~s_symba_kick->module~swiftest module~s_symba_kick->module~symba module~s_symba_step s_symba_step module~s_symba_step->module~swiftest module~s_symba_step->module~symba module~s_symba_util s_symba_util module~s_symba_util->module~swiftest module~s_symba_util->module~fraggle module~s_symba_util->module~symba module~s_tides_kick_getacch s_tides_kick_getacch module~s_tides_kick_getacch->module~swiftest module~s_tides_step_rot s_tides_step_rot module~s_tides_step_rot->module~swiftest module~s_walltime s_walltime module~s_walltime->module~swiftest module~s_whm_coord s_whm_coord module~s_whm_coord->module~swiftest module~s_whm_coord->module~whm module~s_whm_gr s_whm_gr module~s_whm_gr->module~swiftest module~s_whm_gr->module~whm module~s_whm_kick s_whm_kick module~s_whm_kick->module~swiftest module~s_whm_kick->module~whm module~s_whm_step s_whm_step module~s_whm_step->module~swiftest module~s_whm_step->module~whm module~s_whm_util s_whm_util module~s_whm_util->module~swiftest module~s_whm_util->module~whm module~shgrav->module~swiftest module~symba->module~swiftest module~symba->module~helio module~whm->module~swiftest module~whm_drift whm_drift module~whm_drift->module~swiftest module~whm_drift->module~whm program~main main program~main->module~swiftest

Variables

Type Visibility Attributes Name Initial
character(len=*), public, parameter :: ENCOUNTER_OUTFILE = 'encounters.nc'

Name of NetCDF output file for encounter information
real(kind=DP), public, parameter :: RSWEEP_FACTOR = 1.1_DP

Interfaces

interface

  • public module subroutine encounter_check_all_plpl(param, npl, r, v, renc, dt, nenc, index1, index2, lvdotr)

    Arguments

    Type IntentOptional Attributes Name
    class(base_parameters), intent(inout) :: param

    Current Swiftest run configuration parameter5s
    integer(kind=I4B), intent(in) :: npl

    Total number of massive bodies
    real(kind=DP), intent(in), dimension(:,:) :: r

    Position vectors of massive bodies
    real(kind=DP), intent(in), dimension(:,:) :: v

    Velocity vectors of massive bodies
    real(kind=DP), intent(in), dimension(:) :: renc

    Critical radii of massive bodies that defines an encounter

    real(kind=DP), intent(in) :: dt

    Step size
    integer(kind=I8B), intent(out) :: nenc

    Total number of encounters
    integer(kind=I4B), intent(out), dimension(:), allocatable :: index1

    List of indices for body 1 in each encounter
    integer(kind=I4B), intent(out), dimension(:), allocatable :: index2

    List of indices for body 2 in each encounter
    logical, intent(out), dimension(:), allocatable :: lvdotr

    Logical flag indicating the sign of v .dot. x

interface

  • public module subroutine encounter_check_all_plplm(param, nplm, nplt, rplm, vplm, rplt, vplt, rencm, renct, dt, nenc, index1, index2, lvdotr)

    Arguments

    Type IntentOptional Attributes Name
    class(base_parameters), intent(inout) :: param

    Current Swiftest run configuration parameter5s
    integer(kind=I4B), intent(in) :: nplm

    Total number of fully interacting massive bodies

    integer(kind=I4B), intent(in) :: nplt

    Total number of partially interacting masive bodies (GM < GMTINY)

    real(kind=DP), intent(in), dimension(:,:) :: rplm

    Position vectors of fully interacting massive bodies
    real(kind=DP), intent(in), dimension(:,:) :: vplm

    Velocity vectors of fully interacting massive bodies
    real(kind=DP), intent(in), dimension(:,:) :: rplt

    Position vectors of partially interacting massive bodies
    real(kind=DP), intent(in), dimension(:,:) :: vplt

    Velocity vectors of partially interacting massive bodies
    real(kind=DP), intent(in), dimension(:) :: rencm

    Critical radii of fully interacting massive bodies that defines an encounter
    real(kind=DP), intent(in), dimension(:) :: renct

    Critical radii of partially interacting massive bodies that defines an encounter
    real(kind=DP), intent(in) :: dt

    Step size
    integer(kind=I8B), intent(out) :: nenc

    Total number of encounters
    integer(kind=I4B), intent(out), dimension(:), allocatable :: index1

    List of indices for body 1 in each encounter
    integer(kind=I4B), intent(out), dimension(:), allocatable :: index2

    List of indices for body 2 in each encounter
    logical, intent(out), dimension(:), allocatable :: lvdotr

    Logical flag indicating the sign of v .dot. x

interface

  • public module subroutine encounter_check_all_pltp(param, npl, ntp, rpl, vpl, rtp, vtp, renc, dt, nenc, index1, index2, lvdotr)

    Arguments

    Type IntentOptional Attributes Name
    class(base_parameters), intent(inout) :: param

    Current Swiftest run configuration parameter5s
    integer(kind=I4B), intent(in) :: npl

    Total number of massive bodies

    integer(kind=I4B), intent(in) :: ntp

    Total number of test particles

    real(kind=DP), intent(in), dimension(:,:) :: rpl

    Position vectors of massive bodies
    real(kind=DP), intent(in), dimension(:,:) :: vpl

    Velocity vectors of massive bodies
    real(kind=DP), intent(in), dimension(:,:) :: rtp

    Position vectors of massive bodies
    real(kind=DP), intent(in), dimension(:,:) :: vtp

    Velocity vectors of massive bodies
    real(kind=DP), intent(in), dimension(:) :: renc

    Critical radii of massive bodies that defines an encounter
    real(kind=DP), intent(in) :: dt

    Step size
    integer(kind=I8B), intent(out) :: nenc

    Total number of encounters
    integer(kind=I4B), intent(out), dimension(:), allocatable :: index1

    List of indices for body 1 in each encounter
    integer(kind=I4B), intent(out), dimension(:), allocatable :: index2

    List of indices for body 2 in each encounter
    logical, intent(out), dimension(:), allocatable :: lvdotr

    Logical flag indicating the sign of v .dot. x

interface

  • public module subroutine encounter_check_collapse_ragged_list(ragged_list, n1, nenc, index1, index2, lvdotr)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_list), intent(in), dimension(:) :: ragged_list

    The ragged encounter list
    integer(kind=I4B), intent(in) :: n1

    Number of bodies 1
    integer(kind=I8B), intent(out) :: nenc

    Total number of encountersj

    integer(kind=I4B), intent(out), dimension(:), allocatable :: index1

    Array of indices for body 1
    integer(kind=I4B), intent(out), dimension(:), allocatable :: index2

    Array of indices for body 1
    logical, intent(out), optional, dimension(:), allocatable :: lvdotr

    Array indicating which bodies are approaching

interface

  • public elemental module subroutine encounter_check_one(xr, yr, zr, vxr, vyr, vzr, renc, dt, lencounter, lvdotr)

    Arguments

    Type IntentOptional Attributes Name
    real(kind=DP), intent(in) :: xr

    Relative distance vector components
    real(kind=DP), intent(in) :: yr

    Relative distance vector components
    real(kind=DP), intent(in) :: zr

    Relative distance vector components
    real(kind=DP), intent(in) :: vxr

    Relative velocity vector components
    real(kind=DP), intent(in) :: vyr

    Relative velocity vector components
    real(kind=DP), intent(in) :: vzr

    Relative velocity vector components
    real(kind=DP), intent(in) :: renc

    Critical encounter distance
    real(kind=DP), intent(in) :: dt

    Step size
    logical, intent(out) :: lencounter

    Flag indicating that an encounter has occurred
    logical, intent(out) :: lvdotr

    Logical flag indicating the direction of the v .dot. r vector

interface

  • public pure module subroutine encounter_check_sort_aabb_1D(self, n, extent_arr)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_bounding_box_1D), intent(inout) :: self

    Bounding box structure along a single dimension
    integer(kind=I4B), intent(in) :: n

    Number of bodies with extents
    real(kind=DP), intent(in), dimension(:) :: extent_arr

    Array of extents of size 2*n

interface

  • public module subroutine encounter_check_sweep_aabb_double_list(self, n1, n2, r1, v1, r2, v2, renc1, renc2, dt, nenc, index1, index2, lvdotr)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_bounding_box), intent(inout) :: self

    Multi-dimensional bounding box structure
    integer(kind=I4B), intent(in) :: n1

    Number of bodies 1
    integer(kind=I4B), intent(in) :: n2

    Number of bodies 2
    real(kind=DP), intent(in), dimension(:,:) :: r1

    Array of indices of bodies 1
    real(kind=DP), intent(in), dimension(:,:) :: v1

    Array of indices of bodies 1
    real(kind=DP), intent(in), dimension(:,:) :: r2

    Array of indices of bodies 2
    real(kind=DP), intent(in), dimension(:,:) :: v2

    Array of indices of bodies 2
    real(kind=DP), intent(in), dimension(:) :: renc1

    Radius of encounter regions of bodies 1
    real(kind=DP), intent(in), dimension(:) :: renc2

    Radius of encounter regions of bodies 2
    real(kind=DP), intent(in) :: dt

    Step size
    integer(kind=I8B), intent(out) :: nenc

    Total number of encounter candidates
    integer(kind=I4B), intent(out), dimension(:), allocatable :: index1

    List of indices for body 1 in each encounter candidate pair
    integer(kind=I4B), intent(out), dimension(:), allocatable :: index2

    List of indices for body 2 in each encounter candidate pair
    logical, intent(out), dimension(:), allocatable :: lvdotr

    Logical array indicating which pairs are approaching

interface

  • public module subroutine encounter_check_sweep_aabb_single_list(self, n, r, v, renc, dt, nenc, index1, index2, lvdotr)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_bounding_box), intent(inout) :: self

    Multi-dimensional bounding box structure
    integer(kind=I4B), intent(in) :: n

    Number of bodies
    real(kind=DP), intent(in), dimension(:,:) :: r

    Array of position and velocity vectors

    real(kind=DP), intent(in), dimension(:,:) :: v

    Array of position and velocity vectors

    real(kind=DP), intent(in), dimension(:) :: renc

    Radius of encounter regions of bodies 1
    real(kind=DP), intent(in) :: dt

    Step size
    integer(kind=I8B), intent(out) :: nenc

    Total number of encounter candidates
    integer(kind=I4B), intent(out), dimension(:), allocatable :: index1

    List of indices for one body in each encounter candidate pair
    integer(kind=I4B), intent(out), dimension(:), allocatable :: index2

    List of indices for the other body in each encounter candidate pair
    logical, intent(out), dimension(:), allocatable :: lvdotr

    Logical array indicating which pairs are approaching

interface

  • public module subroutine encounter_io_netcdf_dump(self, param)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_storage), intent(inout) :: self

    Encounter storage object
    class(base_parameters), intent(inout) :: param

    Current run configuration parameters

interface

  • public module subroutine encounter_io_netcdf_initialize_output(self, param)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_netcdf_parameters), intent(inout) :: self

    Parameters used to identify a particular NetCDF dataset
    class(base_parameters), intent(in) :: param

interface

  • public module subroutine encounter_io_netcdf_open(self, param, readonly)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_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 encounter_io_netcdf_write_frame_snapshot(self, history, param)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_snapshot), intent(in) :: self

    Swiftest encounter structure
    class(encounter_storage), intent(inout) :: history

    Encounter storage object
    class(base_parameters), intent(inout) :: param

    Current run configuration parameters

interface

  • public module subroutine encounter_util_append_list(self, source, lsource_mask)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_list), intent(inout) :: self

    Swiftest encounter list object
    class(encounter_list), intent(in) :: source

    Source object to append
    logical, intent(in), dimension(:) :: lsource_mask

    Logical mask indicating which elements to append to

interface

  • public module subroutine encounter_util_copy_list(self, source)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_list), intent(inout) :: self

    Encounter list

    class(encounter_list), intent(in) :: source

    Source object to copy into

interface

  • public module subroutine encounter_util_dealloc_aabb(self)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_bounding_box_1D), intent(inout) :: self

    Bounding box structure along a single dimension

interface

  • public module subroutine encounter_util_dealloc_bounding_box(self)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_bounding_box), intent(inout) :: self

    Bounding box structure

interface

  • public module subroutine encounter_util_dealloc_list(self)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_list), intent(inout) :: self

    Swiftest encounter list object

interface

  • public module subroutine encounter_util_dealloc_snapshot(self)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_snapshot), intent(inout) :: self

    Encounter shapshot object

interface

  • public module subroutine encounter_util_dealloc_storage(self)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_storage), intent(inout) :: self

    Swiftest storage object

interface

  • public module subroutine encounter_util_get_idvalues_snapshot(self, idvals)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_snapshot), intent(in) :: self

    Encounter snapshot object
    integer(kind=I4B), intent(out), dimension(:), allocatable :: idvals

    Array of all id values saved in this snapshot

interface

  • public module subroutine encounter_util_get_vals_storage(self, idvals, tvals)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_storage), intent(in) :: self

    Encounter storages object
    integer(kind=I4B), intent(out), dimension(:), allocatable :: idvals

    Array of all id values in all snapshots
    real(kind=DP), intent(out), dimension(:), allocatable :: tvals

    Array of all time values in all snapshots

interface

  • public module subroutine encounter_util_index_map(self)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_storage), intent(inout) :: self

    Encounter storage object

interface

  • public module subroutine encounter_util_resize_list(self, nnew)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_list), intent(inout) :: self

    Swiftest encounter list

    integer(kind=I8B), intent(in) :: nnew

    New size of list needed

interface

  • public module subroutine encounter_util_setup_aabb(self, n, n_last)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_bounding_box), intent(inout) :: self

    Swiftest encounter structure
    integer(kind=I4B), intent(in) :: n

    Number of objects with bounding box extents
    integer(kind=I4B), intent(in) :: n_last

    Number of objects with bounding box extents the previous time this was called

interface

  • public module subroutine encounter_util_setup_list(self, n)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_list), intent(inout) :: self

    Swiftest encounter structure
    integer(kind=I8B), intent(in) :: n

    Number of encounters to allocate space for

interface

  • public module subroutine encounter_util_snapshot(self, param, nbody_system, t, arg)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_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 system time
    character(len=*), intent(in), optional :: arg

    Optional argument (needed for extended storage type used in collision snapshots)

interface

  • public module subroutine encounter_util_spill_list(self, discards, lspill_list, ldestructive)

    Arguments

    Type IntentOptional Attributes Name
    class(encounter_list), intent(inout) :: self

    Swiftest encounter list

    class(encounter_list), intent(inout) :: discards

    Discarded object

    logical, intent(in), dimension(:) :: lspill_list

    Logical array of bodies to spill into the discards
    logical, intent(in) :: ldestructive

    Logical flag indicating whether or not this operation should alter body by removing the discard list

Derived Types

type, public ::  encounter_bounding_box

Components

Type Visibility Attributes Name Initial
type(encounter_bounding_box_1D), public :: aabb

Finalizations Procedures

final :: encounter_final_bounding_box

Type-Bound Procedures

procedure, public :: dealloc => encounter_util_dealloc_bounding_box

Deallocates all allocatables
procedure, public :: setup => encounter_util_setup_aabb

Setup a new axis-aligned bounding box structure
generic, public :: sweep => sweep_single, sweep_double
procedure, public :: sweep_double => encounter_check_sweep_aabb_double_list

Sweeps the sorted bounding box extents and returns the encounter candidates
procedure, public :: sweep_single => encounter_check_sweep_aabb_single_list

Sweeps the sorted bounding box extents and returns the encounter candidates

type, public ::  encounter_bounding_box_1D

Components

Type Visibility Attributes Name Initial
integer(kind=I8B), public, dimension(:), allocatable :: ibeg

Beginning index for box
integer(kind=I8B), public, dimension(:), allocatable :: iend

Ending index for box
integer(kind=I4B), public, dimension(:), allocatable :: ind

Sorted minimum/maximum extent indices (value > n indicates an ending index)
integer(kind=I4B), public :: n

Number of bodies with extents

Finalizations Procedures

final :: encounter_final_aabb

Finalize the axis-aligned bounding box (1D) - deallocates all allocatables

Type-Bound Procedures

procedure, public :: dealloc => encounter_util_dealloc_aabb

Deallocates all allocatables
procedure, public :: sort => encounter_check_sort_aabb_1D

Sorts the bounding box extents along a single dimension prior to the sweep phase

type, public, abstract ::  encounter_list

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

Type-Bound Procedures

procedure, public :: append => encounter_util_append_list

Appends elements from one structure to another
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 :: 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 :: 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(netcdf_parameters) ::  encounter_netcdf_parameters

NetCDF dimension and variable names for the enounter save 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 :: 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

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 :: 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
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

Finalizations Procedures

final :: encounter_final_netcdf_parameters

Finalizer will close the NetCDF file

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 => encounter_io_netcdf_initialize_output

Initialize a set of parameters used to identify a NetCDF output object
procedure, public :: open => encounter_io_netcdf_open

Open an encounter NetCDF file
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(base_object) ::  encounter_snapshot

A simplified version of a SyMBA nbody system object for storing minimal snapshots of the system state during encounters

Components

Type Visibility Attributes Name Initial
integer(kind=I8B), public :: iloop

Loop number at time of snapshot
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

Finalizations Procedures

final :: encounter_final_snapshot

Type-Bound Procedures

procedure, public :: dealloc => encounter_util_dealloc_snapshot

Deallocates all allocatables
procedure, public :: get_idvals => encounter_util_get_idvalues_snapshot

Gets an array of all id values saved in this snapshot
procedure, public :: write_frame => encounter_io_netcdf_write_frame_snapshot

Writes a frame of encounter data to file

type, public, extends(base_storage) ::  encounter_storage

A class that that is used to store simulation history data between file output

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

Finalizations Procedures

final :: encounter_final_storage

Type-Bound Procedures

procedure, public :: dealloc => encounter_util_dealloc_storage

Deallocates all allocatables
procedure, public :: dump => encounter_io_netcdf_dump

Dumps contents of encounter history to file
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 => encounter_util_index_map

Maps body id values to storage index values so we don’t have to use unlimited dimensions for id
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 :: setup => base_util_setup_storage

Sets up a storage system with a set number of frames

procedure, public :: take_snapshot => encounter_util_snapshot

Take a minimal snapshot of the system through an encounter

Subroutines

public subroutine encounter_final_aabb(self)

Author
David A. Minton

Finalize the axis aligned bounding box (1D) - deallocates all allocatables

Arguments

Type IntentOptional Attributes Name
type(encounter_bounding_box_1D), intent(inout) :: self

public subroutine encounter_final_bounding_box(self)

Author
David A. Minton

Finalize the bounding box object

Arguments

Type IntentOptional Attributes Name
type(encounter_bounding_box), intent(inout) :: self

public subroutine encounter_final_netcdf_parameters(self)

Author
David A. Minton

Finalize the NetCDF by closing the file

Arguments

Type IntentOptional Attributes Name
type(encounter_netcdf_parameters), intent(inout) :: self

public subroutine encounter_final_snapshot(self)

Author
David A. Minton

Deallocates allocatable arrays in an encounter snapshot

Arguments

Type IntentOptional Attributes Name
type(encounter_snapshot), intent(inout) :: self

Encounter storage object

public subroutine encounter_final_storage(self)

Author
David A. Minton

Deallocates allocatable arrays in an encounter snapshot

Arguments

Type IntentOptional Attributes Name
type(encounter_storage), intent(inout) :: self

Encounter storage object