Generalized_Rad

Syntax

Bc Lumped_Flux For Enthalpy [{of} SpeciesName | {in} MaterialPhaseName | {ls} {a | b | c}] {@ | at | for | on | over} Mesh Extent Name [Touching TouchingMeshExtent | Opposing OpposingMeshExtent] = Generalized_Rad [Using Data Specification Data Spec Name] [Multiplier = multiplier | T_Ref = t_ref]

Summary

Radiative energy flux, with values for emissivity, form factor and irradiation taken from expressions

Description

Flux is:

M \epsilon f\left( \sigma T^4 - I \right)

M is MULTIPLIER. \sigma is the Stefan-Boltzmann constant. \epsilon and F are expressions for emissivity and form factor. T is surface temperature. I is the expression for irradiation. If I does not already exist, it will be constructed as \sigma T_{ref}^4, where T_{ref} is either provided by the BC Rad Reference Temperature expression or the inline T_{ref} parameter (constant or string function).

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

–

multiplier

real

1

t_ref

“string”

–