# Pressure

Syntax

  Bc Flux For Darcy_Momentum ([{of} SpeciesName] | [{in} MaterialPhaseName] | [{ls} {a | b | c}]) {@ | at | for | on | over} Mesh Extent Name ([Touching TouchingMeshExtent] | [Opposing OpposingMeshExtent]) = Pressure ([Toggle = toggle] | [User_Field_Name = user_field_name] | [Use_Bulk_Node = use_bulk_node] | [P = p] | [C_T = c_t] | [C_X = c_x] | [C_Y = c_y] | [C_Z = c_z] | [C_Cos_W = c_cos_w] | [C_Sin_W = c_sin_w] | [C1_Cos = c1_cos] | [C1_Sin = c1_sin])

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 | –
toggle | “string” | –
user_field_name | “string” | –
use_bulk_node | “string” | –
p | real | 0
c_t | real | 0
c_x | real | 0
c_y | real | 0
c_z | real | 0
c_cos_w | real | 0
c_sin_w | real | 0
c1_cos | real | 0
c1_sin | real | 0