SmoothMesh

Utilizes a simple Laplacian based smoother to attempt to improve mesh quality. Will not move boundary nodes or nodes along block/subdomain boundaries

Example

The iterations parameter controls the number of smoothing steps to do. Each smoothing step will iterate the mesh toward the "true" smoothed mesh (as measured by the Laplacian smoother). Note that the mesh should reach "steady state": after just a few iterations the mesh will stop moving by much.

As an example here is an original mesh going through 12 iteration of this smoother:

Figure 1: 12 iterations of Laplacian smoothing. Coloring is by element quality (higher is better).

Input Parameters

depends_onThe MeshModifiers that this modifier relies upon (i.e. must execute before this one)
C++ Type:std::vector
Options:
Description:The MeshModifiers that this modifier relies upon (i.e. must execute before this one)
force_prepareFalseNormally all MeshModifiers run before the mesh is prepared for use. This flag can be set on an individual modifier to force preparation between modifiers where they might be needed.
Default:False
C++ Type:bool
Options:
Description:Normally all MeshModifiers run before the mesh is prepared for use. This flag can be set on an individual modifier to force preparation between modifiers where they might be needed.
iterations1The number of smoothing iterations to do.
Default:1
C++ Type:unsigned int
Options:
Description:The number of smoothing iterations to do.

Optional Parameters

control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector
Options:
Description:Adds user-defined labels for accessing object parameters via control logic.
enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Options:
Description:Set the enabled status of the MooseObject.

Advanced Parameters

Input Files

test/tests/mesh_modifiers/smooth_mesh/mesh_smoother.i

test/tests/mesh_modifiers/smooth_mesh/mesh_smoother.i

[Mesh]
  type = FileMesh
  file = concentric_circle_mesh_in.e
[]

[Variables]
  [u]
  []
[]

[Kernels]
  [diff]
    type = Diffusion
    variable = u
  []
[]

[BCs]
  [left]
    type = DirichletBC
    variable = u
    boundary = 'left'
    value = 0
  []
  [right]
    type = DirichletBC
    variable = u
    boundary = 'right'
    value = 1
  []
[]

[Executioner]
  type = Steady
  solve_type = PJFNK
  petsc_options_iname = '-pc_type -pc_hypre_type'
  petsc_options_value = 'hypre boomeramg'
[]

[Outputs]
  exodus = true
[]

[MeshModifiers]
  [smooth]
    type = SmoothMesh
    iterations = 5
  []
[]

References

Example
Input Parameters
Input Files
References

Application Usage

Physics and Syntax

Application Development

Framework Development

MOOSEDocs

Infrastructure

Questions

Information and Tools