m_collisions Module Reference

Ghost-node immersed boundary method: locates ghost/image points, computes interpolation coefficients, and corrects the flow state. More...

Functions/Subroutines
subroutine, public	s_initialize_collisions_module ()
subroutine, public	s_apply_collision_forces (ghost_points, num_gps, ib_markers, forces, torques)
subroutine	s_apply_ib_collision_forces_soft_sphere (num_considered_collisions, forces, torques)
	applies collision forces to IBs assuming a soft-sphere collision model (all IBs are circles or spheres)
subroutine	s_apply_wall_collision_forces_soft_sphere (forces, torques)
	applies collision forces to IBs assuming a soft-sphere collision model (all IBs are circles or spheres)
subroutine	s_detect_ib_collisions (gps, ib_markers, num_gps, num_considered_collisions)
	uses ghost-point/image-point information to determine if it is possible if two IBs are colliding, effectively an optimized nearest neighbor search
subroutine	s_detect_wall_collisions (any_wall_collision)
	uses boundary conditions and particle locations to check for wall conditions
logical function, public	f_neighborhood_ranks_own_location (location)
	function checks if this local MPI processor owns this specific collision
subroutine, public	s_finalize_collisions_module ()

Variables
integer, dimension(:,:), allocatable	collision_lookup
real(wp), dimension(:,:), allocatable	wall_overlap_distances
real(wp)	spring_stiffness
real(wp)	damping_parameter
logical, public	collisions_active
	true when any IB-IB or IB-wall contact was detected on this rank since the last adaptive-dt computation

Detailed Description

Ghost-node immersed boundary method: locates ghost/image points, computes interpolation coefficients, and corrects the flow state.

Function/Subroutine Documentation

f_neighborhood_ranks_own_location()

logical function, public m_collisions::f_neighborhood_ranks_own_location

(

real(wp), dimension(3), intent(in)

location

)

function checks if this local MPI processor owns this specific collision

Definition at line 1185 of file m_collisions.fpp.f90.

s_apply_collision_forces()

subroutine, public m_collisions::s_apply_collision_forces	(	type(ghost_point), dimension(:), intent(in)	ghost_points,
		integer, intent(in)	num_gps,
		type(integer_field), intent(in)	ib_markers,
		real(wp), dimension(num_ibs, 3), intent(inout)	forces,
		real(wp), dimension(num_ibs, 3), intent(inout)	torques )

Definition at line 525 of file m_collisions.fpp.f90.

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s_apply_ib_collision_forces_soft_sphere()

subroutine m_collisions::s_apply_ib_collision_forces_soft_sphere	(	integer, intent(in)	num_considered_collisions,
		real(wp), dimension(num_ibs, 3), intent(inout)	forces,
		real(wp), dimension(num_ibs, 3), intent(inout)	torques )

applies collision forces to IBs assuming a soft-sphere collision model (all IBs are circles or spheres)

Definition at line 554 of file m_collisions.fpp.f90.

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s_apply_wall_collision_forces_soft_sphere()

subroutine m_collisions::s_apply_wall_collision_forces_soft_sphere	(	real(wp), dimension(num_ibs, 3), intent(inout)	forces,
		real(wp), dimension(num_ibs, 3), intent(inout)	torques )

applies collision forces to IBs assuming a soft-sphere collision model (all IBs are circles or spheres)

Definition at line 723 of file m_collisions.fpp.f90.

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s_detect_ib_collisions()

subroutine m_collisions::s_detect_ib_collisions	(	type(ghost_point), dimension(num_gps), intent(in)	gps,
		type(integer_field), intent(in)	ib_markers,
		integer, intent(in)	num_gps,
		integer, intent(out)	num_considered_collisions )

uses ghost-point/image-point information to determine if it is possible if two IBs are colliding, effectively an optimized nearest neighbor search

Definition at line 851 of file m_collisions.fpp.f90.

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s_detect_wall_collisions()

subroutine m_collisions::s_detect_wall_collisions

(

logical, intent(out)

any_wall_collision

)

uses boundary conditions and particle locations to check for wall conditions

Definition at line 1025 of file m_collisions.fpp.f90.

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s_finalize_collisions_module()

subroutine, public m_collisions::s_finalize_collisions_module

Definition at line 1282 of file m_collisions.fpp.f90.

s_initialize_collisions_module()

subroutine, public m_collisions::s_initialize_collisions_module

Definition at line 407 of file m_collisions.fpp.f90.

Variable Documentation

collision_lookup

integer, dimension(:,:), allocatable m_collisions::collision_lookup

Definition at line 374 of file m_collisions.fpp.f90.

collisions_active

logical, public m_collisions::collisions_active

true when any IB-IB or IB-wall contact was detected on this rank since the last adaptive-dt computation

Definition at line 403 of file m_collisions.fpp.f90.

damping_parameter

real(wp) m_collisions::damping_parameter

Definition at line 376 of file m_collisions.fpp.f90.

spring_stiffness

real(wp) m_collisions::spring_stiffness

Definition at line 376 of file m_collisions.fpp.f90.

wall_overlap_distances

real(wp), dimension(:,:), allocatable m_collisions::wall_overlap_distances

Definition at line 375 of file m_collisions.fpp.f90.