RemoveDuplicateFacesFromSidesets

Mesh generator which removes all duplicate faces from sidesets.

Overview

This meshgenerator will remove duplicate faces from a sideset. We often use a gmsh script to mesh discrete fracture networks. The mesh script produces a 3D mesh with 2D fractures represented as sidesets. The sidesets will contain faces from both volumetric elements that lie on the fracture. These duplicated faces must be removed before using the meshgenerator with the LowerDBlockFromSidesetGenerator to turn the sidesets into blocks or else duplicated blocks will be created.

Example Input File Syntax

[Mesh<<<{"href": "../../syntax/Mesh/index.html"}>>>]
  [rmDuplicateSS]
    input<<<{"description": "The mesh we want to modify"}>>> = fmg
    type = RemoveDuplicateFacesFromSidesets<<<{"description": "Mesh generator which removes all duplicate faces from sidesets.", "href": "RemoveDuplicateFacesFromSidesets.html"}>>>
  []
[]

Input Parameters

inputThe mesh we want to modify
C++ Type:MeshGeneratorName
Controllable:No
Description:The mesh we want to modify

Required Parameters

enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Controllable:No
Description:Set the enabled status of the MooseObject.
save_with_nameKeep the mesh from this mesh generator in memory with the name specified
C++ Type:std::string
Controllable:No
Description:Keep the mesh from this mesh generator in memory with the name specified

Advanced Parameters

nemesisFalseWhether or not to output the mesh file in the nemesisformat (only if output = true)
Default:False
C++ Type:bool
Controllable:No
Description:Whether or not to output the mesh file in the nemesisformat (only if output = true)
outputFalseWhether or not to output the mesh file after generating the mesh
Default:False
C++ Type:bool
Controllable:No
Description:Whether or not to output the mesh file after generating the mesh
show_infoFalseWhether or not to show mesh info after generating the mesh (bounding box, element types, sidesets, nodesets, subdomains, etc)
Default:False
C++ Type:bool
Controllable:No
Description:Whether or not to show mesh info after generating the mesh (bounding box, element types, sidesets, nodesets, subdomains, etc)

Debugging Parameters

Input Files

(test/tests/meshgenerators/deleteDuplicateSidesets/msh_to_exodus_rm_duplicate_ss.i)

(test/tests/meshgenerators/deleteDuplicateSidesets/msh_to_exodus_rm_duplicate_ss.i)

# This is a MOOSE input file to remove duplicate elements from sidesets created by the DFN gmsh script
# The gmsh script creates a sideset called disk1 that contains faces from the volumetric elements
# on both sides of the fracture.
# This creates a duplicate elements in the sideset that need to be removed.
# This script also has the mesh generator to put the sideset into its own lower Dimensional block.
# The area of the the seven sided paralelegram is checked.
# without removing the duplicate sideset, this value is doubled.

[Mesh]
  [fmg]
    type = FileMeshGenerator
    file = example1.msh
  []
  [rmDuplicateSS]
    input = fmg
    type = RemoveDuplicateFacesFromSidesets
  []
  [fracture]
    input = rmDuplicateSS
    type = LowerDBlockFromSidesetGenerator
    new_block_id = 11
    new_block_name = 'fracture'
    sidesets = 'disk1'
  []
[]

[Problem]
  solve = false
[]

[Executioner]
  type = Steady
[]
[Functions]
  [unity]
    type = ParsedFunction
    expression = 1
  []
[]

[Postprocessors]
  [unity]
    type = FunctionElementIntegral
    function = 'unity'
    execute_on = 'initial'
    block = 11
  []
  [compare]
    type = ParsedPostprocessor
    expression = 'abs(unity-0.6841)'
    pp_names = 'unity'
  []
[]

[UserObjects]
  [terminate]
    type = Terminator
    expression = 'compare > 1e-4'
    error_level = ERROR
    message = 'The area of the seven sided polygon disk is 0.6841'
  []
[]

[Outputs]
[]