prghTotalPressure

Description

The prghTotalPressure is a boundary condition that provides static pressure condition for p_rgh, calculated as:

$$p_{rgh} = p - \rho g (h - h_{ref})$$ $$p = p_0 - 0.5 \rho |\vec{u}|^2$$

where:

Property	Description
$p_{rgh}$	Pseudo hydrostatic pressure [Pa]
$p$	Static pressure [Pa]
$p_0$	Total pressure [Pa]
$h$	Height in the opposite direction to gravity
$h_{ref}$	Reference height in the opposite direction to gravity
$\rho$	Density
$g$	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            prghTotalPressure;
    p0              <scalarField>;

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

    // Inherited entries
    ...
}

where:

Property	Description	Type	Required	Default
type	Type name: prghTotalPressure	word	yes	-
p0	Total pressure field	word	yes	-
rho	Name of density field	word	no	rho
phi	Name of flux field	word	no	phi
U	Name of velocity field	word	no	U

The inherited entries are elaborated in:

• Foam::fixedValueFvPatchField

Further information

Tutorial:

• simpleCarSolarPanel

Source code:

• prghTotalPressure

API:

• Foam::prghTotalPressureFvPatchScalarField

History: Introduced in version 2.4.0