TRISO 1D Mesh

!syntax description /Mesh/TRISO1DMesh

Description

Creates a 1D mesh appropriate for use in TRISO analysis. The user supplies radial coordinates that mark the boundaries of mesh blocks. A list of numbers of elements per block is also supplied. Sidesets are created at each mesh boundary.

Example Input Syntax

[Mesh]
  type = TRISO1DMesh
  elem_type = EDGE2
  coordinates = '0 .1 .1 .2'
  mesh_density = '1 0 2'
  block_names = 'fred wilma'
[]
(test/tests/triso/mesh/mesh_with_coincident_nodes.i)

Input Parameters

  • mesh_densityA list giving the number of elements in each interval (could be zero for a gap).

    C++ Type:std::vector

    Description:A list giving the number of elements in each interval (could be zero for a gap).

  • coordinatesRadial coordinates of mesh block boundaries.

    C++ Type:std::vector

    Description:Radial coordinates of mesh block boundaries.

Required Parameters

  • elem_typeEDGE3The type of element from libMesh to generate

    Default:EDGE3

    C++ Type:MooseEnum

    Description:The type of element from libMesh to generate

  • block_namesA list of names to be assigned to the mesh blocks.

    C++ Type:std::vector

    Description:A list of names to be assigned to the mesh blocks.

  • allow_renumberingTrueIf allow_renumbering=false, node and element numbers are kept fixed until deletion

    Default:True

    C++ Type:bool

    Description:If allow_renumbering=false, node and element numbers are kept fixed until deletion

  • parallel_typeDEFAULTDISTRIBUTED: Always use libMesh::DistributedMesh REPLICATED: Always use libMesh::ReplicatedMesh DEFAULT: Use libMesh::ReplicatedMesh unless --distributed-mesh is specified on the command line

    Default:DEFAULT

    C++ Type:MooseEnum

    Description:DISTRIBUTED: Always use libMesh::DistributedMesh REPLICATED: Always use libMesh::ReplicatedMesh DEFAULT: Use libMesh::ReplicatedMesh unless --distributed-mesh is specified on the command line

  • ghosting_patch_sizeThe number of nearest neighbors considered for ghosting purposes when 'iteration' patch update strategy is used. Default is 5 * patch_size.

    C++ Type:unsigned int

    Description:The number of nearest neighbors considered for ghosting purposes when 'iteration' patch update strategy is used. Default is 5 * patch_size.

  • max_leaf_size10The maximum number of points in each leaf of the KDTree used in the nearest neighbor search. As the leaf size becomes larger,KDTree construction becomes faster but the nearest neighbor searchbecomes slower.

    Default:10

    C++ Type:unsigned int

    Description:The maximum number of points in each leaf of the KDTree used in the nearest neighbor search. As the leaf size becomes larger,KDTree construction becomes faster but the nearest neighbor searchbecomes slower.

Optional Parameters

  • partitionerdefaultSpecifies a mesh partitioner to use when splitting the mesh for a parallel computation.

    Default:default

    C++ Type:MooseEnum

    Description:Specifies a mesh partitioner to use when splitting the mesh for a parallel computation.

  • centroid_partitioner_directionSpecifies the sort direction if using the centroid partitioner. Available options: x, y, z, radial

    C++ Type:MooseEnum

    Description:Specifies the sort direction if using the centroid partitioner. Available options: x, y, z, radial

Partitioning Parameters

  • dim1This is only required for certain mesh formats where the dimension of the mesh cannot be autodetected. In particular you must supply this for GMSH meshes. Note: This is completely ignored for ExodusII meshes!

    Default:1

    C++ Type:MooseEnum

    Description:This is only required for certain mesh formats where the dimension of the mesh cannot be autodetected. In particular you must supply this for GMSH meshes. Note: This is completely ignored for ExodusII meshes!

  • enableTrueSet the enabled status of the MooseObject.

    Default:True

    C++ Type:bool

    Description:Set the enabled status of the MooseObject.

  • patch_update_strategyneverHow often to update the geometric search 'patch'. The default is to never update it (which is the most efficient but could be a problem with lots of relative motion). 'always' will update the patch for all slave nodes at the beginning of every timestep which might be time consuming. 'auto' will attempt to determine at the start of which timesteps the patch for all slave nodes needs to be updated automatically.'iteration' updates the patch at every nonlinear iteration for a subset of slave nodes for which penetration is not detected. If there can be substantial relative motion between the master and slave surfaces during the nonlinear iterations within a timestep, it is advisable to use 'iteration' option to ensure accurate contact detection.

    Default:never

    C++ Type:MooseEnum

    Description:How often to update the geometric search 'patch'. The default is to never update it (which is the most efficient but could be a problem with lots of relative motion). 'always' will update the patch for all slave nodes at the beginning of every timestep which might be time consuming. 'auto' will attempt to determine at the start of which timesteps the patch for all slave nodes needs to be updated automatically.'iteration' updates the patch at every nonlinear iteration for a subset of slave nodes for which penetration is not detected. If there can be substantial relative motion between the master and slave surfaces during the nonlinear iterations within a timestep, it is advisable to use 'iteration' option to ensure accurate contact detection.

  • control_tagsAdds user-defined labels for accessing object parameters via control logic.

    C++ Type:std::vector

    Description:Adds user-defined labels for accessing object parameters via control logic.

  • nemesisFalseIf nemesis=true and file=foo.e, actually reads foo.e.N.0, foo.e.N.1, ... foo.e.N.N-1, where N = # CPUs, with NemesisIO.

    Default:False

    C++ Type:bool

    Description:If nemesis=true and file=foo.e, actually reads foo.e.N.0, foo.e.N.1, ... foo.e.N.N-1, where N = # CPUs, with NemesisIO.

  • construct_node_list_from_side_listTrueWhether or not to generate nodesets from the sidesets (usually a good idea).

    Default:True

    C++ Type:bool

    Description:Whether or not to generate nodesets from the sidesets (usually a good idea).

  • patch_size40The number of nodes to consider in the NearestNode neighborhood.

    Default:40

    C++ Type:unsigned int

    Description:The number of nodes to consider in the NearestNode neighborhood.

Advanced Parameters

Input Files