forceModel gradPForceSmooth command

Syntax

Defined in couplingProperties dictionary.

forceModels
(
    gradPForceSmooth;
);
gradPForceSmoothProps
{
    pFieldName         "pressure";
    velocityFieldName  "U";
    useAddedMass       scalar1;
    treatForceExplicit switch1;
    treatForceDEM      switch2;
    interpolation      switch3;
    smoothingModel     "smoothingModel";
}

  • pressure = name of the finite volume fluid pressure field

  • U = name of the finite volume fluid velocity field

  • scalar1 = (optional, default 0) coefficient of added mass accounted for

  • switch1 = (optional, default false) sub model switch, see forceSubModel for details

  • switch2 = (optional, default false) sub model switch, see forceSubModel for details

  • switch3 = (optional, default false) flag to use interpolated pressure values

  • smoothingModel = name of smoothing model

Examples

forceModels
(
    gradPForceSmooth;
);
gradPForceSmoothProps
{
    pFieldName        "p_rgh";
    velocityFieldName "U";
    interpolation     false;
    smoothingModel    "temporalSmoothing";
    temporalSmoothingProps
    {
        lowerLimit 0.1;
        upperLimit 1e10;
        refField   "p_rgh";
        gamma      1.0;
    }

}

Description

The gradPForceSmooth model calculates the particle based pressure gradient force identically to the gradPForce model but allows smoothing of the pressure prior to the force calculation (without altering the original pressure field). Any smoothing model can be used and does not have to be the same as specified in couplingProperties. Properties for the smoothing model have to be specified in a sub-dictionary within gradPForceSmoothProps.

Restrictions

A volScalarField “pSmooth” MUST be specified in the initial time directory!