Description🔗

The swirlFlowRateInletVelocity is a velocity boundary condition that provides a volumetric- or mass-flow normal vector boundary condition by its magnitude as an integral over its area with a swirl component determined by the angular speed, given in revolutions per minute (RPM).

The basis of the patch (volumetric or mass) is determined by the dimensions of the flux, phi. The current density is used to correct the velocity when applying the mass basis.

Usage🔗

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

Boundary file🔗

<patchName>
{
    type            patch;
    ...
}

Field file🔗

<patchName>
{
    // Mandatory entries
    type           swirlFlowRateInletVelocity;
    flowRate       <Function1<scalar>>;
    rpm            <Function1<scalar>>;

    // Optional entries
    phi            <word>;
    rho            <word>;
    origin         <vector>;
    axis           <vector>;

    // Inherited entries
    ...
}

where:

The inherited entries are elaborated in:

• Foam::fixedValueFvPatchField

• Foam::Function1

• The value is positive into the domain.

Further information🔗

Tutorial:

• N/A

Source code:

• $FOAM_SRC/finiteVolume/fields/fvPatchFields/derived/swirlFlowRateInletVelocity

API:

• Foam::swirlFlowRateInletVelocityFvPatchVectorField

History:

• Introduced in version 1.7.0