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/*@@
@file GRHydro_Particle.F90
@date Wed Mar 31 11:10:52 2004
@author Ian Hawke
@desc
Track coordinates of particles.
@enddesc
@@*/
#include "cctk.h"
#include "cctk_Parameters.h"
#include "cctk_Arguments.h"
#include "cctk_Functions.h"
/*@@
@routine GRHydroParticleRHS
@date Wed Mar 31 11:11:26 2004
@author Ian Hawke
@desc
Track particles.
Most of this code is taken from Peter Dieners EHFinder - generator tracking.
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
subroutine GRHydroParticleRHS(CCTK_ARGUMENTS)
implicit none
DECLARE_CCTK_PARAMETERS
DECLARE_CCTK_ARGUMENTS
DECLARE_CCTK_FUNCTIONS
CCTK_INT :: i
CCTK_INT :: interp_handle, table_handle, status, coord_system_handle
character(len=200) :: particle_interp
character(len=128) :: warn_message
CCTK_INT :: particle_interp_len
character(len=7) :: particle_order
CCTK_INT, dimension(1) :: lsh
CCTK_POINTER, dimension(3) :: interp_coords
CCTK_POINTER, dimension(7) :: out_arrays
CCTK_INT, dimension(7) :: in_arrays
CCTK_INT, dimension(7), parameter :: op_indices = (/ 0, 1, 2, 3, 4, &
5, 6 /), &
op_codes = (/ 0, 0, 0, 0, 0, &
0, 0 /)
CCTK_INT, dimension(7) :: out_types
out_types = CCTK_VARIABLE_REAL
! Convert the particle_interpolator string parameter to a Fortran string.
call CCTK_FortranString ( particle_interp_len, particle_interpolator, &
particle_interp )
! Get the corresponding interpolator handle.
call CCTK_InterpHandle ( interp_handle, particle_interp )
if ( interp_handle .lt. 0 ) then
warn_message = 'Cannot get handle for interpolation.'
warn_message = trim(warn_message)//' Forgot to activate an implementation'
warn_message = trim(warn_message)//' providing interpolation operators?'
call CCTK_WARN( 0, trim(warn_message) )
end if
! Convert the interpolation order parameter to a Fortran string to be placed
! in the interpolator table. Note that the order is assumed to contain only
! 1 digit.
write(particle_order,'(a6,i1)') 'order=', particle_interpolation_order
! Create the table directly from the string.
call Util_TableCreateFromString ( table_handle, particle_order )
if ( table_handle .lt. 0 ) then
call CCTK_WARN( 0, 'Cannot create parameter table for interpolator' )
end if
! Get the 3D coordinate system handle.
call CCTK_CoordSystemHandle ( coord_system_handle, 'cart3d' )
if ( coord_system_handle .lt. 0) then
warn_message = 'Cannot get handle for cart3d coordinate system.'
warn_message = trim(warn_message)//' Forgot to activate an implementation'
warn_message = trim(warn_message)//' providing coordinates?'
call CCTK_WARN( 0, trim(warn_message) )
endif
! Find out how many interpolation points are located on this processor.
call CCTK_GrouplshGN ( status, cctkGH, 1, lsh, 'GRHydro::particles' )
if ( status .lt. 0 ) then
call CCTK_WARN ( 0, 'cannot get local size for particles' )
end if
! Set the pointers to the output arrays.
out_arrays(1) = CCTK_PointerTo(particle_vx)
out_arrays(2) = CCTK_PointerTo(particle_vy)
out_arrays(3) = CCTK_PointerTo(particle_vz)
out_arrays(4) = CCTK_PointerTo(particle_alp)
out_arrays(5) = CCTK_PointerTo(particle_betax)
out_arrays(6) = CCTK_PointerTo(particle_betay)
out_arrays(7) = CCTK_PointerTo(particle_betaz)
! Set the pointers to the points to be interpolated to.
interp_coords(1) = CCTK_PointerTo(particle_x)
interp_coords(2) = CCTK_PointerTo(particle_y)
interp_coords(3) = CCTK_PointerTo(particle_z)
! Set the indices to the input grid functions.
call CCTK_VarIndex ( in_arrays(1), 'GRHydro::velx' )
call CCTK_VarIndex ( in_arrays(2), 'GRHydro::vely' )
call CCTK_VarIndex ( in_arrays(3), 'GRHydro::velz' )
call CCTK_VarIndex ( in_arrays(4), 'admbase::alp' )
call CCTK_VarIndex ( in_arrays(5), 'admbase::betax' )
call CCTK_VarIndex ( in_arrays(6), 'admbase::betay' )
call CCTK_VarIndex ( in_arrays(7), 'admbase::betaz' )
! Set the operand indices table entry
call Util_TableSetIntArray ( status, table_handle, 7, &
op_indices(1:7), 'operand_indices' )
if ( status .lt. 0 ) then
warn_message = 'Cannot set operand indices array in parameter table'
call CCTK_WARN ( 0, trim(warn_message) )
endif
! Set the corresponding table entry for the operation codes.
call Util_TableSetIntArray ( status, table_handle, 7, &
op_codes(1:7), 'operation_codes' )
if ( status .lt. 0 ) then
warn_message = 'Cannot set operation codes array in parameter table'
call CCTK_WARN ( 0, trim(warn_message) )
endif
! Call the interpolator.
call CCTK_InterpGridArrays ( status, cctkGH, 3, interp_handle, &
table_handle, coord_system_handle, &
lsh(1), CCTK_VARIABLE_REAL, &
interp_coords, 7, in_arrays(1:7), &
7, out_types(1:7), out_arrays(1:7) )
if ( status .lt. 0 ) then
call CCTK_INFO ( 'Interpolation failed.' )
end if
! For each point on this processor calculate the right hand side of the
! characteristic evolution equation.
do i = 1, lsh(1)
particle_x_rhs(i) = particle_alp(i) * particle_vx(i) - &
particle_betax(i)
particle_y_rhs(i) = particle_alp(i) * particle_vy(i) - &
particle_betay(i)
particle_z_rhs(i) = particle_alp(i) * particle_vz(i) - &
particle_betaz(i)
end do
return
end subroutine GRHydroParticleRHS
/*@@
@routine GRHydroParticleInitial
@date Wed Mar 31 11:53:25 2004
@author Ian Hawke
@desc
Sets up the initial coordinates of the particles. Can be overwritten
by something scheduled in HydroBase_Initial.
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
subroutine GRHydroParticleInitial(CCTK_ARGUMENTS)
implicit none
DECLARE_CCTK_PARAMETERS
DECLARE_CCTK_ARGUMENTS
DECLARE_CCTK_FUNCTIONS
CCTK_INT, dimension(1) :: lsh, lbnd
CCTK_INT :: i, status
CCTK_REAL :: radius, angle, xmin, xmax, ymin, ymax, zmin, zmax, twopi
twopi = 4.d0 * atan(1.d0)
if (number_of_particles .gt. 0) then
! Find out how many interpolation points are located on this processor.
call CCTK_GrouplshGN ( status, cctkGH, 1, lsh, 'GRHydro::particles' )
if ( status .lt. 0 ) then
call CCTK_WARN ( 0, 'cannot get local size for particles' )
end if
call CCTK_GrouplbndGN ( status, cctkGH, 1, lbnd, 'GRHydro::particles' )
if ( status .lt. 0 ) then
call CCTK_WARN ( 0, 'cannot get lower bounds for particles' )
end if
call CCTK_CoordRange(status,cctkGH,xmin,xmax,-1,"x","cart3d")
call CCTK_CoordRange(status,cctkGH,ymin,ymax,-1,"y","cart3d")
call CCTK_CoordRange(status,cctkGH,zmin,zmax,-1,"z","cart3d")
radius = 0.1d0 * min(xmax, ymax, zmax)
do i = 1, lsh(1)
angle = dble(lbnd(1)+i-1) / dble(number_of_particles) * twopi
particle_x(i) = radius * sin(angle)
particle_y(i) = radius * cos(angle)
particle_z(i) = 0.d0
particle_x_p(i) = particle_x(i)
particle_y_p(i) = particle_y(i)
particle_z_p(i) = particle_z(i)
particle_x_p_p(i) = particle_x(i)
particle_y_p_p(i) = particle_y(i)
particle_z_p_p(i) = particle_z(i)
particle_x_rhs(i) = 0.d0
particle_y_rhs(i) = 0.d0
particle_z_rhs(i) = 0.d0
particle_vx(i) = 0.d0
particle_vy(i) = 0.d0
particle_vz(i) = 0.d0
particle_alp(i) = 0.d0
particle_betax(i) = 0.d0
particle_betay(i) = 0.d0
particle_betaz(i) = 0.d0
end do
end if
end subroutine GRHydroParticleInitial
|
