forceModel_volWeightedAverage command

Syntax

Defined in couplingProperties dictionary.

forceModels
(
    volWeightedAverage
);
volWeightedAverageProps
{
    startTime time;
    scalarFieldNames
    (
        scalarField
    );
    vectorFieldNames
    (
        vectorField
    );
    upperThreshold scalar1;
    lowerThreshold scalar2;
    useVolumeFraction switch0;
    volumeFractionName word1;
    verbose ;
    writeToFile switch1;
};

• time = (optional, default 0.) time to start the averaging
• scalarField = names of the finite volume scalar fields to be temporally averaged
• vectorField = names of the finite volume vector fields to be temporally averaged
• scalar1 = only cells with a field value (magnitude) lower than this upper threshold are considered
• scalar2 = only cells with a field value (magnitude) greater than this lower threshold are considered
• switch0 = (optional, default false) consider a volume fraction for the calculation
• word1 = (optional, default “voidfraction”) name of the volume fraction, only used if useVolumeFraction is true
• verbose = (optional, default false) keyword only (mostly used for debugging)
• switch1 = (optional, default false) switch for the output.

Examples

forceModels
(
    volWeightedAverage
);
volWeightedAverageProps
{
    startTime 0.1;
    scalarFieldNames
    (
        voidfraction
    );
    vectorFieldNames
    (
    );
    upperThreshold 0.999;
    lowerThreshold 0;
}

Description

This “forceModel” does not influence the particles or the simulation - it is a postprocessing tool! Starting at start time the volume weighted averages of those cells of the fields within the threshold are calculated. At “writeTime” a field named volAverage_field , where scalarField is the name of the original field, is written. This can then be probed using standard function object probes.

Restrictions

Currently all fields have the same threshold value!

Related commands

forceModel