Exponential

Syntax

Bc Flux For Energy [{of} SpeciesName | {in} MaterialPhaseName | {ls} {a | b | c}] {on} Mesh Extent Name [Touching TouchingMeshExtent | Opposing OpposingMeshExtent] = Exponential [Using Data Specification Data Spec Name] [Power_Output = power_output | Flux_Output = flux_output | Toggle = toggle | Variable = variable | Constant = constant | Multiplier = multiplier | Exponent = exponent]

Summary

Value from an exponential function

Description

F = C + M e^{k X}

where X is the variable, C is the constant, M is the multiplier, and k is exponent. C and M are optional and default to 0 and 1 respectively.

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}

–

{on}

{@ | at | for | in | on | over}

–

Mesh Extent Name

string

–

TouchingMeshExtent

string

–

OpposingMeshExtent

string

–

Data Spec Name

string

–

power_output

“string”

–

flux_output

“string”

–

toggle

“string”

–

variable

“string”

–

constant

real

0

multiplier

real

1

exponent

real

–