forceModel_GidaspowDrag command

Syntax:

Defined in couplingProperties dictionary.

forceModels
(
    GidaspowDrag
);
GidaspowDragProps
{
    velFieldName "U";
    voidfractionFieldName "voidfraction";
    granVelFieldName "Us";
    phi "scalar";
    interpolation switch1;
    implForceDEM switch2;
}; 

• U = name of the finite volume fluid velocity field
• voidfraction = name of the finite volume voidfraction field
• Us = name of the finite volume cell averaged particle velocity field
• phi = drag correction factor (in doubt 1)
• switch1 = (optional, normally off) flag to use interpolated voidfraction and fluid velocity values switch2 = (optional, normally off) flag to use implicit formulation of drag on DEM side:l

Examples:

forceModels
(
    GidaspowDrag
);
GidaspowDragProps
{
    velFieldName "U";
    voidfractionFieldName "voidfraction";
    granVelFieldName "Us";
} 

Description:

The force model performs the calculation of forces (e.g. fluid-particle interaction forces) acting on each DEM particle. The GidaspowDrag model is a model that calculates the particle based drag force following the correlation of Gidaspow which is a combination of Ergun (1952) and Wen & Yu (1966) (see Zhu et al. (2007): "Discrete particle simulation of particulate systems: Theoretical developments", ChemEngScience).

Restrictions:

none.

Related commands:

forceModel