test/modules/LinearBoltzmannSolvers/Transport_SteadyCBC/Transport1D_1.lua

-- 1D Transport test with Vacuum and Incident-isotropic BC.
-- SDM: PWLD
-- Test: Max-value=0.49903 and 7.18243e-4
num_procs = 3
 
 
 
 
 
--############################################### 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=100
L=30.0
xmin = 0.0
dx = L/N
for i=1,(N+1) do
  k=i-1
  nodes[i] = xmin + k*dx
end
 
meshgen1 = chi_mesh.OrthogonalMeshGenerator.Create({ node_sets = {nodes} })
chi_mesh.MeshGenerator.Execute(meshgen1)
 
--############################################### Set Material IDs
chiVolumeMesherSetMatIDToAll(0)
 
--############################################### Add materials
materials = {}
materials[1] = chiPhysicsAddMaterial("Test Material");
materials[2] = chiPhysicsAddMaterial("Test Material2");
 
chiPhysicsMaterialAddProperty(materials[1],TRANSPORT_XSECTIONS)
chiPhysicsMaterialAddProperty(materials[2],TRANSPORT_XSECTIONS)
 
chiPhysicsMaterialAddProperty(materials[1],ISOTROPIC_MG_SOURCE)
chiPhysicsMaterialAddProperty(materials[2],ISOTROPIC_MG_SOURCE)
 
 
num_groups = 168
chiPhysicsMaterialSetProperty(materials[1],TRANSPORT_XSECTIONS,
  CHI_XSFILE,"xs_3_170.cxs")
chiPhysicsMaterialSetProperty(materials[2],TRANSPORT_XSECTIONS,
  CHI_XSFILE,"xs_3_170.cxs")
 
--chiPhysicsMaterialSetProperty(materials[1],TRANSPORT_XSECTIONS,SIMPLEXS0,num_groups,0.1)
--chiPhysicsMaterialSetProperty(materials[2],TRANSPORT_XSECTIONS,SIMPLEXS0,num_groups,0.1)
 
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)
chiPhysicsMaterialSetProperty(materials[2],ISOTROPIC_MG_SOURCE,FROM_ARRAY,src)
 
--############################################### Setup Physics
pquad0 = chiCreateProductQuadrature(GAUSS_LEGENDRE,40)
lbs_block =
{
  num_groups = num_groups,
  groupsets =
  {
    {
      groups_from_to = {0, 62},
      angular_quadrature_handle = pquad0,
      angle_aggregation_num_subsets = 1,
      groupset_num_subsets = 8,
      inner_linear_method = "gmres",
      l_abs_tol = 1.0e-6,
      l_max_its = 300,
      gmres_restart_interval = 100,
    },
    {
      groups_from_to = {63, num_groups-1},
      angular_quadrature_handle = pquad0,
      angle_aggregation_num_subsets = 1,
      groupset_num_subsets = 8,
      inner_linear_method = "gmres",
      l_abs_tol = 1.0e-6,
      l_max_its = 300,
      gmres_restart_interval = 100,
    },
  },
  sweep_type = "CBC"
}
 
bsrc={}
for g=1,num_groups do
  bsrc[g] = 0.0
end
bsrc[1] = 1.0/2
 
lbs_options =
{
  boundary_conditions =
  {
    {
      name = "zmin",
      type = "incident_isotropic",
      group_strength = bsrc
    }
  },
  scattering_order = 5,
  save_angular_flux = true
}
 
phys1 = lbs.DiscreteOrdinatesSolver.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)
 
--############################################### Line plot
--Testing consolidated interpolation
cline = chiFFInterpolationCreate(LINE)
chiFFInterpolationSetProperty(cline,LINE_FIRSTPOINT,0.0,0.0,0.0001+xmin)
chiFFInterpolationSetProperty(cline,LINE_SECONDPOINT,0.0,0.0, 29.999+xmin)
chiFFInterpolationSetProperty(cline,LINE_NUMBEROFPOINTS, 50)
 
for k=165,165 do
  chiFFInterpolationSetProperty(cline,ADD_FIELDFUNCTION,fflist[k])
end
 
chiFFInterpolationInitialize(cline)
chiFFInterpolationExecute(cline)
 
--############################################### Volume integrations
vol0 = chi_mesh.RPPLogicalVolume.Create({infx=true, infy=true, infz=true})
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=%.5f", maxval))
 
ffi2 = chiFFInterpolationCreate(VOLUME)
curffi = ffi2
chiFFInterpolationSetProperty(curffi,OPERATION,OP_MAX)
chiFFInterpolationSetProperty(curffi,LOGICAL_VOLUME,vol0)
chiFFInterpolationSetProperty(curffi,ADD_FIELDFUNCTION,fflist[160])
 
chiFFInterpolationInitialize(curffi)
chiFFInterpolationExecute(curffi)
maxval = chiFFInterpolationGetValue(curffi)
 
chiLog(LOG_0,string.format("Max-value2=%.5e", maxval))
 
--############################################### Exports
if (master_export == nil) then
  chiFFInterpolationExportPython(cline)
end
 
--############################################### Plots
if (chi_location_id == 0 and master_export == nil) then
  local handle = io.popen("python3 ZLFFI00.py")
end