# 7.17.1.29.13. User_Function

Syntax

  Source For Momentum ([{of} SpeciesName] | [{in} MaterialPhaseName] | [{ls} {a | b | c}]) {@ | at | for | on | over} MeshPartIdentifier = User_Function ([Name_X = name_x] | [Name_Y = name_y] | [Name_Z = name_z] | X = x | [Multiplier = multiplier])

Summary

  Value from a Vector User Function

Parameter | Value | Default
--- | --- | ---
{of} | {of | species | subindex} | –
SpeciesName | string | –
{in} | {in | material_phase} | –
MaterialPhaseName | string | –
{ls} | {levelset_phase | ls} | –
MeshPartIdentifier | string | –
name_x | “string” | –
name_y | “string” | –
name_z | “string” | –
x | “string” | –
multiplier | real | 1