FLASH4.6.1 API

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[Functions] source/Particles/Particles_mapFromMesh

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NAME

  Particles_mapFromMesh

SYNOPSIS

  Particles_mapFromMesh(integer, INTENT(in)    :: mapType,
                        integer, INTENT(in)    :: numAttrib,
                        integer, INTENT(in)    :: attrib(2,numAttrib)
                           real, INTENT(in)    :: pos(MDIM)
                           real, INTENT(in)    :: bndBox(2,MDIM)
                           real, INTENT(in)    :: delta(MDIM)
                           real, pointer       :: solnVec(:,:,:,:)
                           real, INTENT(INOUT) :: partAttribVec(numAttrib)

DESCRIPTION

  Routine to map a list of  quantities defined on the mesh onto a single
  particle position.

  Currently volume elements are assumed to be Cartesian or
  2D axisymmetric (r-z).

  This version does quadratic interpolation onto particle
  positions (rather than the standard linear particle-mesh
  mapping).
  The routines assumes that the input arguement attrib contains the 
  list of particle attributes that need updating, and the corresponding
  mesh variables. The following constants are defined in "Particles.h"
  which must be included in the routine

     PART_DS_IND  : index into particle data structure   
     GRID_DS_IND  : index into the grid data structure
  As and example, if it is desired to map
  all three directional velocities, and the density then
  numAttrib is 4, and the array attrib will have the following values
     attrib(PART_DS_IND,1)=VELX_PART_PROP, attrib(GRID_DS_IND,1)=VELX_VAR
     attrib(PART_DS_IND,2)=VELY_PART_PROP, attrib(GRID_DS_IND,2)=VELY_VAR
     attrib(PART_DS_IND,3)=VELZ_PART_PROP, attrib(GRID_DS_IND,3)=VELZ_VAR
     attrib(PART_DS_IND,4)=DENS_PART_PROP, attrib(GRID_DS_IND,4)=DENS_VAR
  Here the order of the attributes is completely unimportant, only the 
  map between the particle property and the grid variable should be on the
  same index

ARGUMENTS

   mapType   : method used to map grid quantities to particles
   numAttrib : number of attributes to update
   attrib    : list containing the attributes and the corresponding grid
               data structure index
   pos       : The physical coordinates of the particle
   bndBox    : the bounding box of the block containing the particle
   delta     : the dx,dy,dz of the block
   solnVec   : Pointer to the solution data block in which particle is found
   partAttribVec  : calculated particle attribute values