# 7.17.1.30.3. Boussinesq

Syntax

  Source For Momentum ([{of} SpeciesName] | [{in} MaterialPhaseName] | [{ls} {a | b | c}]) {@ | at | for | on | over} MeshPartIdentifier = Boussinesq ([Gx = gx] | [Gy = gy] | [Gz = gz] | Temp_Ref = temp_ref)

Summary

  Boussinesq source for momentum equation

Parameter | Value | Default
--- | --- | ---
{of} | {of | species | subindex} | –
SpeciesName | string | –
{in} | {in | material_phase} | –
MaterialPhaseName | string | –
{ls} | {levelset_phase | ls} | –
MeshPartIdentifier | string | –
gx | real | 0
gy | real | 0
gz | real | 0
temp_ref | real | –