test/modules/LinearBoltzmannSolvers/MGDiffusion_Steady/MIPDiffusion3D_1b_Ortho.lua

-- 3D Transport test with Vacuum and Incident-isotropic BC.
-- SDM: PWLD
-- Test: Max-value=5.28310e-01 and 8.04576e-04
num_procs = 4
if (reflecting == nil) then reflecting = true end
 
 
 
 
--############################################### Check num_procs
if (check_num_procs==nil and chi_number_of_processes ~= num_procs) then
  chiLog(LOG_0ERROR,"Incorrect amount of processors. " ..
    "Expected "..tostring(num_procs)..
    ". Pass check_num_procs=false to override if possible.")
  os.exit(false)
end
 
--############################################### Setup mesh
nodes={}
N=10
L=5
xmin = -L/2
dx = L/N
for i=1,(N+1) do
  k=i-1
  nodes[i] = xmin + k*dx
end
znodes={}
for i=1,(N/2+1) do
  k=i-1
  znodes[i] = xmin + k*dx
end
if (reflecting) then
  meshgen1 = chi_mesh.OrthogonalMeshGenerator.Create({ node_sets = {nodes,nodes,znodes} })
else
  meshgen1 = chi_mesh.OrthogonalMeshGenerator.Create({ node_sets = {nodes,nodes,nodes} })
end
chi_mesh.MeshGenerator.Execute(meshgen1)
 
--############################################### Set Material IDs
vol0 = chi_mesh.RPPLogicalVolume.Create({infx=true, infy=true, infz=true})
chiVolumeMesherSetMatIDToAll(0)
 
--############################################### Add materials
materials = {}
materials[1] = chiPhysicsAddMaterial("Test Material");
 
chiPhysicsMaterialAddProperty(materials[1],TRANSPORT_XSECTIONS)
 
chiPhysicsMaterialAddProperty(materials[1],ISOTROPIC_MG_SOURCE)
 
 
num_groups = 21
chiPhysicsMaterialSetProperty(materials[1],TRANSPORT_XSECTIONS,
  CHI_XSFILE,"../Transport_Steady/xs_graphite_pure.cxs")
 
src={}
for g=1,num_groups do
  src[g] = 0.0
end
src[1] = 1.0
chiPhysicsMaterialSetProperty(materials[1],ISOTROPIC_MG_SOURCE,FROM_ARRAY,src)
 
--############################################### Setup Physics
pquad0 = chiCreateProductQuadrature(GAUSS_LEGENDRE_CHEBYSHEV,2, 2)
 
lbs_block =
{
  num_groups = num_groups,
  groupsets =
  {
    {
      groups_from_to = {0, 20},
      angular_quadrature_handle = pquad0,
      angle_aggregation_type = "single",
      angle_aggregation_num_subsets = 1,
      groupset_num_subsets = 1,
      inner_linear_method = "gmres",
      l_abs_tol = 1.0e-6,
      l_max_its = 300,
      gmres_restart_interval = 100,
    },
  }
}
 
lbs_options =
{
  scattering_order = 1,
}
if (reflecting) then
  lbs_options.boundary_conditions = {{name = "zmax", type = "reflecting"}}
end
 
phys1 = lbs.DiffusionDFEMSolver.Create(lbs_block)
lbs.SetOptions(phys1, lbs_options)
 
--############################################### Initialize and Execute Solver
ss_solver = lbs.SteadyStateSolver.Create({lbs_solver_handle = phys1})
 
chiSolverInitialize(ss_solver)
chiSolverExecute(ss_solver)
 
--############################################### Get field functions
fflist,count = chiLBSGetScalarFieldFunctionList(phys1)
 
--############################################### Slice plot
--slices = {}
--for k=1,count do
--    slices[k] = chiFFInterpolationCreate(SLICE)
--    chiFFInterpolationSetProperty(slices[k],SLICE_POINT,0.0,0.0,0.8001)
--    chiFFInterpolationSetProperty(slices[k],ADD_FIELDFUNCTION,fflist[k])
--    --chiFFInterpolationSetProperty(slices[k],SLICE_TANGENT,0.393,1.0-0.393,0)
--    --chiFFInterpolationSetProperty(slices[k],SLICE_NORMAL,-(1.0-0.393),-0.393,0.0)
--    --chiFFInterpolationSetProperty(slices[k],SLICE_BINORM,0.0,0.0,1.0)
--    chiFFInterpolationInitialize(slices[k])
--    chiFFInterpolationExecute(slices[k])
--    chiFFInterpolationExportPython(slices[k])
--end
 
--############################################### Volume integrations
ffi1 = chiFFInterpolationCreate(VOLUME)
curffi = ffi1
chiFFInterpolationSetProperty(curffi,OPERATION,OP_MAX)
chiFFInterpolationSetProperty(curffi,LOGICAL_VOLUME,vol0)
chiFFInterpolationSetProperty(curffi,ADD_FIELDFUNCTION,fflist[1])
 
chiFFInterpolationInitialize(curffi)
chiFFInterpolationExecute(curffi)
maxval = chiFFInterpolationGetValue(curffi)
 
chiLog(LOG_0,string.format("Max-value1=%.5e", maxval))
 
ffi1 = chiFFInterpolationCreate(VOLUME)
curffi = ffi1
chiFFInterpolationSetProperty(curffi,OPERATION,OP_MAX)
chiFFInterpolationSetProperty(curffi,LOGICAL_VOLUME,vol0)
chiFFInterpolationSetProperty(curffi,ADD_FIELDFUNCTION,fflist[20])
 
chiFFInterpolationInitialize(curffi)
chiFFInterpolationExecute(curffi)
maxval = chiFFInterpolationGetValue(curffi)
 
chiLog(LOG_0,string.format("Max-value2=%.5e", maxval))
 
--############################################### Exports
if (master_export == nil) then
  if (reflecting) then
    chiExportMultiFieldFunctionToVTK(fflist,"ZPhi3DReflected")
  else
    chiExportMultiFieldFunctionToVTK(fflist,"ZPhi3D")
  end
end
 
--############################################### Plots
if (chi_location_id == 0 and master_export == nil) then
 
  --os.execute("python ZPFFI00.py")
  ----os.execute("python ZPFFI11.py")
  --local handle = io.popen("python ZPFFI00.py")
  print("Execution completed")
end
 
-- DO
--[0]  Max-value1=2.52092e+00
--[0]  Max-value2=5.79100e-03
 
-- MGDiffusion
--[0]  Max-value1=2.74873e-01
--[0]  Max-value2=9.47508e-05