forceModel_gradPForce command

Syntax

Defined in couplingProperties dictionary.

forceModels
(
    gradPForce;
);
gradPForceProps
{
    pFieldName "pressure";
    velocityFieldName "U";
    interpolation       switch1;
    gradPInterpolationType "type1"
    useAddedMass        scalar1;
    suppressProbe       switch2;
    treatForceExplicit  switch3;
    treatForceDEM       switch4;
};

  • pressure = name of the finite volume fluid pressure field

  • U = (optional, default “U”) name of the finite volume fluid velocity field

  • switch1 = flag to use interpolated pressure values (normally off)

  • type1 = (optional, default cellPointFace) interpolation type for grad(p) field

  • useAddedMass = (optional) coefficient of added mass accounted for

  • switch2 = (optional, default false) can be used to suppress the output of the probe model

  • switch3 = (optional, default true) sub model switch, see forceSubModel for details

  • switch4 = (optional, default false) sub model switch, see forceSubModel for details

Examples

forceModels
(
    gradPForce;
);
gradPForceProps
{
    pFieldName "p";
    velocityFieldName "U";
    interpolation true;
}

Description

The force model performs the calculation of forces (e.g. fluid-particle interaction forces) acting on each DEM particle. The gradPForce model is a model that calculates the particle based pressure gradient force -(grad(p)) * Vparticle (see Zhou et al. (2010): “Discrete particle simulation of particle-fluid flow: model formulations and their applicability” ,JFM).

Restrictions

none.