# InterfaceIntegralVariableValuePostprocessor

## Description !syntax description /Postprocessors/InterfaceIntegralVariableValuePostprocessor

This post-processor is used to compute an integral value of variable on an interface. The type of average to compute is selected by changing the interface_value_type parameter. If the parameter interface_value_type is omitted it defaults to compute the average value between the two input variables across the interface. The various types of averages that can be computed are describe in more details in InterfaceValueTools.

## Example Input File Syntax

listing test/tests/postprocessors/interface_value/interface_integral_variable_value_postprocessor.i block=Postprocessors/diffusivity_average

## Input Parameters

• variableThe name of the variable on the master side of the interface

C++ Type:std::vector

Options:

Description:The name of the variable on the master side of the interface

• boundaryThe list of boundary IDs from the mesh where this boundary condition applies

C++ Type:std::vector

Options:

Description:The list of boundary IDs from the mesh where this boundary condition applies

### Required Parameters

• neighbor_variableThe name of the variable on the slave side of the interface. By default the same variable name is used for the slave side

C++ Type:std::vector

Options:

Description:The name of the variable on the slave side of the interface. By default the same variable name is used for the slave side

• execute_onTIMESTEP_ENDThe list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, FINAL, CUSTOM.

Default:TIMESTEP_END

C++ Type:ExecFlagEnum

Options:NONE INITIAL LINEAR NONLINEAR TIMESTEP_END TIMESTEP_BEGIN FINAL CUSTOM TRANSFER

Description:The list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, FINAL, CUSTOM.

• interface_value_typeaverageType of value we want to compute

Default:average

C++ Type:MooseEnum

Options:average jump_master_minus_slave jump_slave_minus_master jump_abs master slave

Description:Type of value we want to compute

### Optional Parameters

• enableTrueSet the enabled status of the MooseObject.

Default:True

C++ Type:bool

Options:

Description:Set the enabled status of the MooseObject.

• 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.

• 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

• 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.

• allow_duplicate_execution_on_initialFalseIn the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).

Default:False

C++ Type:bool

Options:

Description:In the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).

• implicitTrueDetermines whether this object is calculated using an implicit or explicit form

Default:True

C++ Type:bool

Options:

Description:Determines whether this object is calculated using an implicit or explicit form