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

Functions/Subroutines
impure subroutine, public	s_initialize_ibm_module ()
	Allocates memory for the variables in the IBM module.
impure subroutine, public	s_ibm_setup ()
	Initializes the values of various IBM variables, such as ghost points and image points.
subroutine, public	s_ibm_correct_state (q_cons_vf, q_prim_vf, pb_in, mv_in)
	Update the conservative variables at the ghost points.
impure subroutine, private	s_compute_image_points (ghost_points_in)
	Compute the image points for each ghost point.
subroutine, private	s_find_num_ghost_points (num_gps_out)
	Count the number of ghost points for memory allocation.
subroutine, private	s_find_ghost_points (ghost_points_in)
	Locate all ghost points in the domain.
subroutine, private	s_compute_interpolation_coeffs (ghost_points_in)
	Compute the interpolation coefficients for image points.
subroutine, private	s_interpolate_image_point (q_prim_vf, gp, alpha_rho_ip, alpha_ip, pres_ip, vel_ip, c_ip, r_ip, v_ip, pb_ip, mv_ip, nmom_ip, pb_in, mv_in, presb_ip, massv_ip)
	Interpolate primitive variables to a ghost point's image point using bilinear or trilinear interpolation.
impure subroutine	s_update_mib (num_ibs)
	Resets the current indexes of immersed boundaries and replaces them after updating the position of each moving immersed boundary.
subroutine	s_compute_ib_forces (q_prim_vf, fluid_pp)
	Compute pressure and viscous forces and torques on immersed bodies via volume integration.
subroutine	s_compute_centroid_offset (ib_marker)
	Computes the center of mass for IB patch types where we are unable to determine their center of mass analytically. These patches include things like NACA airfoils and STL models.
subroutine	s_compute_moment_of_inertia (patch, axis, moment)
	Computes the moment of inertia for an immersed boundary.
subroutine	s_wrap_periodic_ibs ()
	Wrap immersed boundary positions across periodic domain boundaries.
subroutine	s_communicate_ib_forces (forces, torques)
	Swaps ownership of IBs and passes ownership of IBs to neighbor processors Reduces forces and torques across the local neighborhood without a global allreduce. Accumulation phase: 2 passes per dimension receiving from the low-index (-X) neighbor. Pass 1: add received values; save what was received as recv_snap. Pass 2: send current (post-pass-1) values; add received; subtract recv_snap to remove double-counting of the direct contribution already added in pass 1. Back-propagation phase: 2 passes per dimension receiving from the high-index (+X) neighbor, each overwriting local forces with the neighbor's accumulated total.
subroutine	s_handoff_ib_ownership ()
subroutine	s_get_neighborhood_idx (gbl_idx, neighborhood_idx)
subroutine	s_update_ib_lookup ()
impure subroutine, public	s_finalize_ibm_module ()
	Finalize the IBM module.

Variables
type(integer_field), public	ib_markers
type(ghost_point), dimension(:), allocatable	ghost_points
integer	num_gps
	Number of ghost points.
logical	moving_immersed_boundary_flag
integer, dimension(:), allocatable	send_ids
integer, dimension(:), allocatable	recv_ids
real(wp), dimension(:,:), allocatable	send_ft
real(wp), dimension(:,:), allocatable	recv_ft
real(wp), dimension(:,:), allocatable	recv_forces_snap
real(wp), dimension(:,:), allocatable	recv_torques_snap

Detailed Description

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

Function/Subroutine Documentation

◆ s_communicate_ib_forces()

subroutine m_ibm::s_communicate_ib_forces	(	real(wp), dimension(num_ibs, 3), intent(inout)	forces,
		real(wp), dimension(num_ibs, 3), intent(inout)	torques )

Swaps ownership of IBs and passes ownership of IBs to neighbor processors Reduces forces and torques across the local neighborhood without a global allreduce. Accumulation phase: 2 passes per dimension receiving from the low-index (-X) neighbor. Pass 1: add received values; save what was received as recv_snap. Pass 2: send current (post-pass-1) values; add received; subtract recv_snap to remove double-counting of the direct contribution already added in pass 1. Back-propagation phase: 2 passes per dimension receiving from the high-index (+X) neighbor, each overwriting local forces with the neighbor's accumulated total.

Definition at line 2504 of file m_ibm.fpp.f90.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ s_compute_centroid_offset()

subroutine m_ibm::s_compute_centroid_offset ( integer, intent(in) ib_marker )

Computes the center of mass for IB patch types where we are unable to determine their center of mass analytically. These patches include things like NACA airfoils and STL models.

Definition at line 2259 of file m_ibm.fpp.f90.

Here is the caller graph for this function:

◆ s_compute_ib_forces()

subroutine m_ibm::s_compute_ib_forces	(	type(scalar_field), dimension(1:sys_size), intent(in)	q_prim_vf,
		type(physical_parameters), dimension(1:num_fluids), intent(in)	fluid_pp )

Compute pressure and viscous forces and torques on immersed bodies via volume integration.

Definition at line 2032 of file m_ibm.fpp.f90.

Here is the call graph for this function:

◆ s_compute_image_points()

impure subroutine, private m_ibm::s_compute_image_points ( type(ghost_point), dimension(num_gps), intent(inout) ghost_points_in )

private

Compute the image points for each ghost point.

Definition at line 1228 of file m_ibm.fpp.f90.

Here is the caller graph for this function:

◆ s_compute_interpolation_coeffs()

subroutine, private m_ibm::s_compute_interpolation_coeffs ( type(ghost_point), dimension(num_gps), intent(inout) ghost_points_in )

private

Compute the interpolation coefficients for image points.

Definition at line 1598 of file m_ibm.fpp.f90.

Here is the caller graph for this function:

◆ s_compute_moment_of_inertia()

subroutine m_ibm::s_compute_moment_of_inertia	(	type(ib_patch_parameters), intent(in)	patch,
		real(wp), dimension(3), intent(in)	axis,
		real(wp), intent(out)	moment )

Computes the moment of inertia for an immersed boundary.

Definition at line 2319 of file m_ibm.fpp.f90.

Here is the caller graph for this function:

◆ s_finalize_ibm_module()

impure subroutine, public m_ibm::s_finalize_ibm_module

Finalize the IBM module.

Definition at line 3487 of file m_ibm.fpp.f90.

◆ s_find_ghost_points()

subroutine, private m_ibm::s_find_ghost_points ( type(ghost_point), dimension(num_gps), intent(inout) ghost_points_in )

private

Locate all ghost points in the domain.

Definition at line 1460 of file m_ibm.fpp.f90.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ s_find_num_ghost_points()

subroutine, private m_ibm::s_find_num_ghost_points ( integer, intent(out) num_gps_out )

private

Count the number of ghost points for memory allocation.

Definition at line 1373 of file m_ibm.fpp.f90.

Here is the caller graph for this function:

◆ s_get_neighborhood_idx()

subroutine m_ibm::s_get_neighborhood_idx	(	integer, intent(in)	gbl_idx,
		integer, intent(out)	neighborhood_idx )

Definition at line 3393 of file m_ibm.fpp.f90.

Here is the caller graph for this function:

◆ s_handoff_ib_ownership()

subroutine m_ibm::s_handoff_ib_ownership

Definition at line 3223 of file m_ibm.fpp.f90.

Here is the call graph for this function:

◆ s_ibm_correct_state()

subroutine, public m_ibm::s_ibm_correct_state	(	type(scalar_field), dimension(sys_size), intent(inout)	q_cons_vf,
		type(scalar_field), dimension(sys_size), intent(inout)	q_prim_vf,
		real(stp), dimension(idwbuff(1)%beg:,idwbuff(2)%beg:,idwbuff(3)%beg:,1:,1:), intent(inout), optional	pb_in,
		real(stp), dimension(idwbuff(1)%beg:,idwbuff(2)%beg:,idwbuff(3)%beg:,1:,1:), intent(inout), optional	mv_in )

Update the conservative variables at the ghost points.

Parameters

[in,out]	q_cons_vf	Primitive Variables
[in,out]	q_prim_vf	Primitive Variables

Definition at line 811 of file m_ibm.fpp.f90.

Here is the call graph for this function:

◆ s_ibm_setup()

impure subroutine, public m_ibm::s_ibm_setup

Initializes the values of various IBM variables, such as ghost points and image points.

Definition at line 553 of file m_ibm.fpp.f90.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ s_initialize_ibm_module()

impure subroutine, public m_ibm::s_initialize_ibm_module

Allocates memory for the variables in the IBM module.

Definition at line 408 of file m_ibm.fpp.f90.

Here is the caller graph for this function:

◆ s_interpolate_image_point()

subroutine, private m_ibm::s_interpolate_image_point	(	type(scalar_field), dimension(sys_size), intent(in)	q_prim_vf,
		type(ghost_point), intent(in)	gp,
		real(wp), dimension(num_fluids), intent(inout)	alpha_rho_ip,
		real(wp), dimension(num_fluids), intent(inout)	alpha_ip,
		real(wp), intent(inout)	pres_ip,
		real(wp), dimension(3), intent(inout)	vel_ip,
		real(wp), intent(inout)	c_ip,
		real(wp), dimension(:), intent(inout), optional	r_ip,
		real(wp), dimension(:), intent(inout), optional	v_ip,
		real(wp), dimension(:), intent(inout), optional	pb_ip,
		real(wp), dimension(:), intent(inout), optional	mv_ip,
		real(wp), dimension(:), intent(inout), optional	nmom_ip,
		real(stp), dimension(idwbuff(1)%beg:,idwbuff(2)%beg:,idwbuff(3)%beg:,1:,1:), intent(in), optional	pb_in,
		real(stp), dimension(idwbuff(1)%beg:,idwbuff(2)%beg:,idwbuff(3)%beg:,1:,1:), intent(in), optional	mv_in,
		real(wp), dimension(:), intent(inout), optional	presb_ip,
		real(wp), dimension(:), intent(inout), optional	massv_ip )

private

Interpolate primitive variables to a ghost point's image point using bilinear or trilinear interpolation.

Parameters

[in] q_prim_vf Primitive Variables

Definition at line 1735 of file m_ibm.fpp.f90.

Here is the caller graph for this function:

◆ s_update_ib_lookup()

subroutine m_ibm::s_update_ib_lookup

Definition at line 3419 of file m_ibm.fpp.f90.

Here is the caller graph for this function:

◆ s_update_mib()

impure subroutine m_ibm::s_update_mib ( integer, intent(in) num_ibs )

Resets the current indexes of immersed boundaries and replaces them after updating the position of each moving immersed boundary.

Definition at line 1926 of file m_ibm.fpp.f90.

Here is the call graph for this function:

◆ s_wrap_periodic_ibs()

subroutine m_ibm::s_wrap_periodic_ibs

Wrap immersed boundary positions across periodic domain boundaries.

Definition at line 2407 of file m_ibm.fpp.f90.

Variable Documentation

◆ ghost_points

type(ghost_point), dimension(:), allocatable m_ibm::ghost_points

Definition at line 359 of file m_ibm.fpp.f90.

◆ ib_markers

type(integer_field), public m_ibm::ib_markers

Definition at line 346 of file m_ibm.fpp.f90.

◆ moving_immersed_boundary_flag

logical m_ibm::moving_immersed_boundary_flag

Definition at line 398 of file m_ibm.fpp.f90.

◆ num_gps

integer m_ibm::num_gps

Number of ghost points.

Definition at line 372 of file m_ibm.fpp.f90.

◆ recv_forces_snap

real(wp), dimension(:,:), allocatable m_ibm::recv_forces_snap

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

◆ recv_ft

real(wp), dimension(:,:), allocatable m_ibm::recv_ft

Definition at line 402 of file m_ibm.fpp.f90.

◆ recv_ids

integer, dimension(:), allocatable m_ibm::recv_ids

Definition at line 401 of file m_ibm.fpp.f90.

◆ recv_torques_snap

real(wp), dimension(:,:), allocatable m_ibm::recv_torques_snap

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

◆ send_ft

real(wp), dimension(:,:), allocatable m_ibm::send_ft

Definition at line 402 of file m_ibm.fpp.f90.

◆ send_ids

integer, dimension(:), allocatable m_ibm::send_ids

Definition at line 401 of file m_ibm.fpp.f90.

Functions/Subroutines

Variables

Detailed Description

Function/Subroutine Documentation

◆ s_communicate_ib_forces()

◆ s_compute_centroid_offset()

◆ s_compute_ib_forces()

◆ s_compute_image_points()

◆ s_compute_interpolation_coeffs()

◆ s_compute_moment_of_inertia()

◆ s_finalize_ibm_module()

◆ s_find_ghost_points()

◆ s_find_num_ghost_points()

◆ s_get_neighborhood_idx()

◆ s_handoff_ib_ownership()

◆ s_ibm_correct_state()

◆ s_ibm_setup()

◆ s_initialize_ibm_module()

◆ s_interpolate_image_point()

◆ s_update_ib_lookup()

◆ s_update_mib()

◆ s_wrap_periodic_ibs()

Variable Documentation

◆ ghost_points

◆ ib_markers

◆ moving_immersed_boundary_flag

◆ num_gps

◆ recv_forces_snap

◆ recv_ft

◆ recv_ids

◆ recv_torques_snap

◆ send_ft

◆ send_ids