forceModel viscForce command¶

Syntax¶

Defined in couplingProperties dictionary.

forceModels
(
    viscForce;
);
viscForceProps
{
    velocityFieldName  "U";
    useAddedMass       scalar1;
    treatForceExplicit switch1;
    treatForceDEM      switch2;
    interpolation      switch3;
    scalarViscosity    switch4;
}

• 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 stress values

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

Examples¶

forceModels
(
    viscForce;
);
viscForceProps
{
    velocityFieldName "U";
}

Description¶

The force model performs the calculation of forces (e.g. fluid-particle interaction forces) acting on each DEM particle. The viscForce model calculates the particle based viscous force, -(grad(tau)) * Vparticle (see Zhou et al. (2010): “Discrete particle simulation of particle-fluid flow: model formulations and their applicability”, J. Fluid Mech.).

Restrictions¶

none

Related commands¶

forceModel