Interpolation schemes are used to transform cell-centre quantities to face centres. The operation is used in many of the finite volume calculations, e.g. for the calculation of gradient, divergence, and Laplacian terms.

Usage🔗

Interpolation schemes are specified in the fvSchemesfile under the interpolationSchemes sub-dictionary using the syntax:

interpolationSchemes
{
    default         none;
    <equation term> <interpolation scheme>;
}

Options🔗

A wide variety of interpolation schemes are available, ranging from those that are based solely on geometry, and others, e.g. convection schemes that are functions of the local flow.

General

• Linear
• Point linear

Convection

• See divergence schemes

Further information🔗

Source code:

• $FOAM_SRC/finiteVolume/interpolation/surfaceInterpolation/surfaceInterpolationScheme

API:

• Foam::surfaceInterpolationScheme