# Cht_Robin

Syntax

  Bc Diffuse For Energy ([{of} SpeciesName] | [{in} MaterialPhaseName] | [{ls} {a | b | c}]) {@ | at | for | on | over} Mesh Extent Name ([Touching TouchingMeshExtent] | [Opposing OpposingMeshExtent]) = Cht_Robin [Using Data Specification Data Spec Name] ([Power_Output = power_output] | [Flux_Output = flux_output] | [Toggle = toggle])

Summary

  Applies a Robin-style BC of the form: J dot n + h * (T-Tref).

Description

  J, h, and Tref should be specified using the material properties BC_HEAT_FLUX, HEAT_TRANSFER_COEFFICIENT, and BC_REFERENCE_TEMPERATURE in a material that is applied to the surface.

  The following options are present in most boundary conditions/sources. The meaning of each option is as follows:

  Power_Output

    If specified, the total (integrated) power of the given BC/Src is calculated and stored into the global variable name specified as the power_output argument.

  Flux_Output

    If specified, the average flux of the given BC/Src is calculated and stored into the global variable name specified as the flux_output argument.

  Toggle

    If given, specifies which toggle block controls whether this BC is active or not.

Parameter | Value | Default
--- | --- | ---
{of} | {of | species | subindex} | –
SpeciesName | string | –
{in} | {in | material_phase} | –
MaterialPhaseName | string | –
{ls} | {levelset_phase | ls} | –
Mesh Extent Name | string | –
TouchingMeshExtent | string | –
OpposingMeshExtent | string | –
Data Spec Name | string | –
power_output | “string” | –
flux_output | “string” | –
toggle | “string” | –