∇

Description

The inletOutlet is a generic boundary condition that provides an outflow condition, with specified inflow for the case of return flow.

Usage

The condition requires entries in both the boundary and field files.

Boundary file 

<patchName>
{
    type            patch;
    ...
}

Field file 

<patchName>
{
    // Mandatory entries
    type            inletOutlet;
    inletValue      <Field<Type>>;

    // Optional entries
    phi             <word>;

    // Inherited entries;
    ...
}

where:

Property Description Type Required Default
type Type name: inletOutlet word yes -
inletValue Patch field for reverse flow Field<Type> yes -
phi Name of flux field word no phi

The inherited entries are elaborated in:

  • mixedFvPatchField.H

  • The mode of operation is determined by the sign of the flux across the patch faces.
  • Sign conventions:
    • Positive flux (out of domain): apply zero-gradient condition.
    • Negative flux (into domain): apply the inletValue fixed-value.

Method

N/A

Further information

Tutorial:

Source code:

API:

History:

  • Introduced in version 1.5