Mass_Open

Syntax

Bc Lumped_Flux For Mass_Balance ([{of} SpeciesName] | [{in} MaterialPhaseName] | [{ls} {a | b | c}]) {@ | at | for | on | over} Mesh Extent Name ([Touching TouchingMeshExtent] | [Opposing OpposingMeshExtent]) = Mass_Open ([Toggle = toggle] | [Pressure = pressure])

Summary

A weakly enforced pressure condition for open flow from a porous flow domain

Description

This model weakly enforces a pressure condition on the boundary of a porous domain, either equal to the specified constant PRESSURE, or set using the BOUNDARY_PRESSURE model from the surface material.

Note

This should only be used with porous flow equations.

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

–

toggle

“string”

–

pressure

real

0