forceModel_viscForce command
Syntax
Defined in couplingProperties dictionary.
forceModels
(
viscForce;
);
viscForceProps
{
velocityFieldName "U";
useAddedMass scalar1;
suppressProbe switch1;
treatForceExplicit switch2;
treatForceDEM switch3;
interpolation switch4;
divTauInterpolationType "type1";
scalarViscosity switch5;
nu scalar2;
};
U = (optional, default “U”) name of the finite volume fluid velocity field
scalar1 = (optional) coefficient of added mass accounted for
switch1 = (optional, default false) can be used to suppress the output of the probe model
switch2 = (optional, default true) sub model switch, see forceSubModel for details
switch3 = (optional, default false) sub model switch, see forceSubModel for details
switch4 = (optional, default false) sub model switch, see forceSubModel for details
type1 = (optional, default cellPointFace) interpolation type for div(Tau) field
switch5 = (optional, default false) sub model switch, see forceSubModel for details
scalar2 = optional, only if switch5 is true
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”, JFM).
Restrictions
none.