Description๐
The atmBoundaryLayerInletEpsilon
is a boundary condition that provides
a log-law type ground-normal inlet boundary condition for the turbulent kinetic
energy dissipation rate (i.e. epsilon
) for homogeneous, two-dimensional,
dry-air, equilibrium and neutral atmospheric boundary layer modelling.
The ground-normal epsilon
profile expression:
where:
Property | Description |
---|---|
\(\epsilon\) | Ground-normal TKE dissipation rate profile [m^2/s^3] |
\(u^*\) | Friction velocity [m/s] |
\(\kappa\) | von Kรกrmรกn constant [-] |
\(z\) | Ground-normal coordinate component [m] |
\(z_0\) | Aerodynamic roughness length [m] |
\(d\) | Ground-normal displacement height [m] |
\(C_1\) | Curve-fitting coefficient for YGCJ profiles [-] |
\(C_2\) | Curve-fitting coefficient for YGCJ profiles [-] |
Usage๐
The condition requires entries in both the boundary and field files.
Boundary file๐
<patchName>
{
type patch;
...
}
Field file๐
<patchName>
{
// Mandatory entries
type atmBoundaryLayerInletEpsilon;
// Inherited entries
...
}
where:
Property | Description | Type | Required | Default |
---|---|---|---|---|
type |
Type name: atmBoundaryLayerInletEpsilon
|
word | yes | - |
The inherited entries are elaborated in:
- atmBoundaryLayer.H
- inletOutletFvPatchField.H
Further information๐
Tutorial:
Source code:
API:
History:
- Introduced in version v1806