uniformDensityHydrostaticPressure

Description

The uniformDensityHydrostaticPressure is a boundary condition that provides a hydrostatic pressure condition, calculated as:

$$p_{hyd} = p_{ref} + \rho g (x - x_{ref})$$

where:

Property	Description
$p_{hyd}$	Hydrostatic pressure [Pa]
$p_{ref}$	Reference pressure [Pa]
$x_{ref}$	Reference point in Cartesian coordinates
$\rho$	Density (assumed uniform)
$g$	Acceleration due to gravity [m/s^2]

Usage

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

Boundary file

<patchName>
{
    type            patch;
    ...
}

Field file

<patchName>
{
    // Mandatory entries
    type            uniformDensityHydrostaticPressure;
    rho             <scalar>;
    pRefValue       <scalar>;
    pRefPoint       <vector>;

    // Inherited entries
    ...
}

where:

Property	Description	Type	Required	Default
type	Type name: uniformDensityHydrostaticPressure	word	yes	-
rho	Value of density	scalar	yes	-
pRefValue	Reference pressure [Pa]	scalar	yes	-
pRefPoint	Reference pressure location	vector	yes	-

The inherited entries are elaborated in:

• fixedValueFvPatchField.H

Further information

Tutorial:

• N/A

Source code:

• uniformDensityHydrostaticPressure

API:

• Foam::uniformDensityHydrostaticPressureFvPatchScalarField

History: Introduced in version 1.6