collisions_mod Module Reference

Functions/Subroutines
subroutine, public	init_collisions
subroutine, public	collisions_disp
	Main routine for the multi-species collision operator.
real(kind=r8) function	glratio (isp, st, chit, ut, mut, psi0corr)
subroutine	collisionless_to_collision_background (isp, ip)
subroutine	collision_to_collisionless_background (isp, ip)
subroutine	collisions_langevin_l (pic1_loc, pic2_loc, isp, ispback)
	Use the Langevin approach to compute the test particle part of the linear collision operator.
subroutine	collisions_langevin_nl (pic1_loc, pic2_loc, isp, ispback)
	Use the Langevin approach to compute the non linear collision operator.
subroutine	moment_correction (pic1_loc, pic2_loc, ispa, ispb)
	the weights are corrected after the collisions in order to conserve density and & ensure the right exchanges of momentum and energy inside each spatial bin
subroutine, public	get_bin_momentum (isp, st, chit, phit, nval, vpval, tval, qpval)
	get the fluid moments corresponding to the bin which contains the marker
subroutine	initial_momentum_computation
	Compute and save the values of the three moments for each bin before the collision step.
subroutine	delta_momentum_computation (isp, choice)
	Compute and save the evolution of the three moments for each bin during the collision step.
subroutine	build_conservation_matrix (pic1_loc, pic2_loc, ispa, ispb)
	Build matrix that are used to ensure conservation inside each spatial bin.
subroutine	alpha_computation (ispa, ispb)
subroutine	momentum_evol_theo_l (ibin, ispa, ispb, deltap, deltae)
subroutine	momentum_evol_theo_nl (ibin, ispa, ispb, deltap, deltae)
real(kind=r8) function, public	rosenbluth_h (x)
real(kind=r8) function, public	rosenbluth_k (x)
real(kind=r8) function	derf_dx (x)
subroutine	get_m_l (ibin, ispa, ispb, v_loc, xi_loc, m1, m2)
subroutine	get_m_nl (ibin, ispa, ispb, v_loc, xi_loc, m1, m2)
subroutine	compute_nuab_bar (ibin, ispa, ispb, nu_ab_bar)
real(kind=r8) function	initial_momentum_function (isp, psi, moment_type)
integer function	coll_ibin_to_radial_index (ibin)
	invert the radial index part of get_space_bin (ibin -> s_bin_index)
real(kind=r8) function	coll_radial_bin_pos (ix)
	get the real radial position of the i-th radial bin

Variables
real(kind=r8), dimension(:,:,:), allocatable	initial_momentum
real(kind=r8), dimension(:,:,:), allocatable	mat_cons_3d
real(kind=r8), dimension(:,:), allocatable	delta_momentum_p
real(kind=r8), dimension(:,:), allocatable	delta_momentum_w
real(kind=r8), dimension(:,:), allocatable	alpha_coef_p
real(kind=r8), dimension(:,:), allocatable	alpha_coef_w
real(kind=r8), dimension(:), allocatable, save, public	rx
real(kind=r8), dimension(:), allocatable, save, public	ry
real(kind=r8), dimension(:), allocatable, save, public	rz
real(kind=r8), save	sqrt_pi
real(kind=r8), save	sqrt_2

Function/Subroutine Documentation

alpha_computation()

subroutine collisions_mod::alpha_computation ( integer, intent(in) ispa, integer, intent(in) ispb )

private

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build_conservation_matrix()

subroutine collisions_mod::build_conservation_matrix ( real(kind=r8), dimension(:,:), intent(in) pic1_loc, real(kind=r8), dimension(:,:), intent(in) pic2_loc, integer, intent(in) ispa, integer, intent(in) ispb )

private

Build matrix that are used to ensure conservation inside each spatial bin.

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coll_ibin_to_radial_index()

integer function collisions_mod::coll_ibin_to_radial_index ( integer, intent(in) ibin )

private

invert the radial index part of get_space_bin (ibin -> s_bin_index)

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coll_radial_bin_pos()

real(kind=r8) function collisions_mod::coll_radial_bin_pos ( integer, intent(in) ix )

private

get the real radial position of the i-th radial bin

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collision_to_collisionless_background()

subroutine collisions_mod::collision_to_collisionless_background ( integer, intent(in) isp, integer, intent(in) ip )

private

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collisionless_to_collision_background()

subroutine collisions_mod::collisionless_to_collision_background ( integer, intent(in) isp, integer, intent(in) ip )

private

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collisions_disp()

subroutine, public collisions_mod::collisions_disp

Main routine for the multi-species collision operator.

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collisions_langevin_l()

subroutine collisions_mod::collisions_langevin_l ( real(kind=r8), dimension(:,:), intent(inout) pic1_loc, real(kind=r8), dimension(:,:), intent(inout) pic2_loc, integer, intent(in) isp, integer, intent(in) ispback )

private

Use the Langevin approach to compute the test particle part of the linear collision operator.

Parameters

[in,out]

pic1_loc

pic array of a certain species.

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collisions_langevin_nl()

subroutine collisions_mod::collisions_langevin_nl ( real(kind=r8), dimension(:,:), intent(inout) pic1_loc, real(kind=r8), dimension(:,:), intent(inout) pic2_loc, integer, intent(in) isp, integer, intent(in) ispback )

private

Use the Langevin approach to compute the non linear collision operator.

Parameters

[in,out]

pic1_loc

pic array of a certain species.

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compute_nuab_bar()

subroutine collisions_mod::compute_nuab_bar ( integer, intent(in) ibin, integer, intent(in) ispa, integer, intent(in) ispb, real(kind=r8), intent(out) nu_ab_bar )

private

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delta_momentum_computation()

subroutine collisions_mod::delta_momentum_computation ( integer, intent(in) isp, integer, intent(in) choice )

private

Compute and save the evolution of the three moments for each bin during the collision step.

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derf_dx()

real(kind=r8) function collisions_mod::derf_dx ( real(kind=r8) x )

private

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get_bin_momentum()

subroutine, public collisions_mod::get_bin_momentum	(	integer, intent(in)	isp,
		real(kind=r8), intent(in)	st,
		real(kind=r8), intent(in)	chit,
		real(kind=r8), intent(in)	phit,
		real(kind=r8), intent(out)	nval,
		real(kind=r8), intent(out)	vpval,
		real(kind=r8), intent(out)	tval,
		real(kind=r8), intent(out)	qpval )

get the fluid moments corresponding to the bin which contains the marker

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get_m_l()

subroutine collisions_mod::get_m_l ( integer, intent(in) ibin, integer, intent(in) ispa, integer, intent(in) ispb, real(kind=r8), intent(in) v_loc, real(kind=r8), intent(in) xi_loc, real(kind=r8), intent(out) m1, real(kind=r8), intent(out) m2 )

private

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get_m_nl()

subroutine collisions_mod::get_m_nl ( integer, intent(in) ibin, integer, intent(in) ispa, integer, intent(in) ispb, real(kind=r8), intent(in) v_loc, real(kind=r8), intent(in) xi_loc, real(kind=r8), intent(out) m1, real(kind=r8), intent(out) m2 )

private

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glratio()

real(kind=r8) function collisions_mod::glratio ( integer, intent(in) isp, real(kind=r8), intent(in) st, real(kind=r8), intent(in) chit, real(kind=r8), intent(in) ut, real(kind=r8), intent(in) mut, real(kind=r8), intent(in) psi0corr )

private

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init_collisions()

subroutine, public collisions_mod::init_collisions

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initial_momentum_computation()

subroutine collisions_mod::initial_momentum_computation

private

Compute and save the values of the three moments for each bin before the collision step.

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initial_momentum_function()

real(kind=r8) function collisions_mod::initial_momentum_function ( integer, intent(in) isp, real(kind=r8), intent(in) psi, integer, intent(in) moment_type )

private

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moment_correction()

subroutine collisions_mod::moment_correction ( real(kind=r8), dimension(:,:), intent(inout) pic1_loc, real(kind=r8), dimension(:,:), intent(inout) pic2_loc, integer, intent(in) ispa, integer, intent(in) ispb )

private

the weights are corrected after the collisions in order to conserve density and & ensure the right exchanges of momentum and energy inside each spatial bin

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momentum_evol_theo_l()

subroutine collisions_mod::momentum_evol_theo_l ( integer, intent(in) ibin, integer, intent(in) ispa, integer, intent(in) ispb, real(kind=r8), intent(out) deltap, real(kind=r8), intent(out) deltae )

private

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momentum_evol_theo_nl()

subroutine collisions_mod::momentum_evol_theo_nl ( integer, intent(in) ibin, integer, intent(in) ispa, integer, intent(in) ispb, real(kind=r8), intent(out) deltap, real(kind=r8), intent(out) deltae )

private

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rosenbluth_h()

real(kind=r8) function, public collisions_mod::rosenbluth_h

(

real(kind=r8)

x

)

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rosenbluth_k()

real(kind=r8) function, public collisions_mod::rosenbluth_k

(

real(kind=r8)

x

)

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Variable Documentation

alpha_coef_p

real(kind=r8), dimension(:,:), allocatable collisions_mod::alpha_coef_p

private

alpha_coef_w

real(kind=r8), dimension(:,:), allocatable collisions_mod::alpha_coef_w

private

delta_momentum_p

real(kind=r8), dimension(:,:), allocatable collisions_mod::delta_momentum_p

private

delta_momentum_w

real(kind=r8), dimension(:,:), allocatable collisions_mod::delta_momentum_w

private

initial_momentum

real(kind=r8), dimension(:,:,:), allocatable collisions_mod::initial_momentum

private

mat_cons_3d

real(kind=r8), dimension(:,:,:), allocatable collisions_mod::mat_cons_3d

private

rx

real(kind=r8), dimension(:), allocatable, save, public collisions_mod::rx

ry

real(kind=r8), dimension(:), allocatable, save, public collisions_mod::ry

rz

real(kind=r8), dimension(:), allocatable, save, public collisions_mod::rz

sqrt_2

real(kind=r8), save collisions_mod::sqrt_2

private

sqrt_pi

real(kind=r8), save collisions_mod::sqrt_pi

private