# User_Function

Syntax

  Bc Lumped_Flux For Darcy_Momentum_Y ([{of} SpeciesName] | [{in} MaterialPhaseName] | [{ls} {a | b | c}]) {@ | at | for | on | over} Mesh Extent Name ([Touching TouchingMeshExtent] | [Opposing OpposingMeshExtent]) = User_Function [Using Data Specification Data Spec Name] (Name = name | X = x | [X_Multiplier = x_multiplier] | [Multiplier = multiplier] | [Toggle = toggle])

Summary

  Value from a user function

Description

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

  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 | –
name | “string” | –
x | “string” | –
x_multiplier | real | 1
multiplier | real | 1
toggle | “string” | –