forceModel_viscForce command

Syntax:

Defined in couplingProperties dictionary.

forceModels
(
    viscForce;
);
viscForceProps
{
    velocityFieldName "U";
    densityFieldName "density";
    interpolation;
}; 

• U = name of the finite volume fluid velocity field
• density = name of the finite volume gravity field
• interpolation = flag to use interolate interpolated stress values (normally off)

Examples:

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

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.

Related commands:

forceModel