LaplacianJumpIndicator

Compute the jump of the solution laplacian across element bondaries.

Description

The LaplacianJumpIndicator object computes the error as computed by the change in the Laplacian of a variable across element interfaces.

warning:LaplacianJumpIndicator requires second derivatives

The Laplacian ( or ) operator requires second derivaties with respect to the spacial dimensions. As such, the selected finite elements must be at least second order for the calculation to be valid.

Example Input File Syntax

The following code snippet demonstrates the use of the LaplacianJumpIndicator object within a typical input file.

[Adaptivity]
  [Indicators]
    [error]
      type = LaplacianJumpIndicator
      variable = u
      scale_by_flux_faces = true
    []
  []
[]
(test/tests/indicators/laplacian_jump_indicator/biharmonic.i)

Input Parameters

  • variableThe name of the variable that this side indicator applies to

    C++ Type:VariableName

    Options:

    Description:The name of the variable that this side indicator applies to

Required Parameters

  • blockThe list of block ids (SubdomainID) that this object will be applied

    C++ Type:std::vector

    Options:

    Description:The list of block ids (SubdomainID) that this object will be applied

  • scale_by_flux_facesFalseWhether or not to scale the error values by the number of flux faces. This attempts to not penalize elements on boundaries for having less neighbors.

    Default:False

    C++ Type:bool

    Options:

    Description:Whether or not to scale the error values by the number of flux faces. This attempts to not penalize elements on boundaries for having less neighbors.

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.

  • outputsVector of output names were you would like to restrict the output of variables(s) associated with this object

    C++ Type:std::vector

    Options:

    Description:Vector of output names were you would like to restrict the output of variables(s) associated with this object

  • use_displaced_meshFalseWhether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.

    Default:False

    C++ Type:bool

    Options:

    Description:Whether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.

Advanced Parameters

Input Files