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 = 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.