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Description

The waveSurfacePressure is a pressure boundary condition whose value is calculated as the hydrostatic pressure based on a given displacement:

\[p = -\rho \, g \, \zeta\]
Property Description
\(\rho\) Density [kg/m^3]
\(g\) Acceleration due to gravity [m/s^2]
\(\zeta\) Wave amplitude [m]

The wave amplitude is updated as part of the calculation, derived from the local volumetric flux.

Usage

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

Boundary file 

<patchName>
{
    type            patch;
    ...
}

Field file 

<patchName>
{
    // Mandatory entries
    type            waveSurfacePressure;

    // Optional entries
    phi             <word>;
    zeta            <word>;
    rho             <word>;

    // Inherited entries
    ...
}

where:

Property Description Type Required Default
type Type name: waveSurfacePressure word yes -
phi Name of flux field word no phi
zeta Name of wave-amplitude field word no zeta
rho Name of density field word no rho

The inherited entries are elaborated in:

  • mixedFvPPatchScalarFields.H

  • The density field is only required if the flux is mass-based as opposed to volumetric-based.

Further information

Tutorial:

Source code:

API:

History:

  • Introduced in version 2.1.0