Description🔗
The fixedShearStress
is boundary condition that
sets a user-defined shear stress constant and uniform across a given
patch by using the expression:
where:
Property | Description |
---|---|
\(\tau\) | Shear stress |
\(\u\) | Velocity |
\(\nu_{eff}\) | Effective viscosity |
\(n\) | Wall normal direction |
Usage🔗
The condition requires entries in both the boundary and field files.
Boundary file🔗
<patchName>
{
type wall;
...
}
Field file🔗
<patchName>
{
// Mandatory entries
type fixedShearStress;
// Optional entries
tau <vector>;
// Inherited entries
...
}
where:
Property | Description | Type | Required | Default |
---|---|---|---|---|
type |
Type name: fixedShearStress
|
word | yes | - |
tau |
Type name: fixedShearStress
|
vector | no | Zero |
The inherited entries are elaborated in:
- fixedValueFvPatchField.H
Further information🔗
Tutorial:
Source code:
API:
History:
- Introduced in version 2.2.2