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56 lines
1.1 KiB
HTML
56 lines
1.1 KiB
HTML
<HTML>
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<CENTER><A HREF = "http://www.cfdem.com">CFDEMproject WWW Site</A> - <A HREF = "CFDEMcoupling_Manual.html#comm">CFDEM Commands</A>
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<HR>
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<H3>forceModel_viscForce command
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</H3>
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<P><B>Syntax:</B>
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</P>
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<P>Defined in couplingProperties dictionary.
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</P>
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<PRE>forceModels
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(
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viscForce;
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);
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viscForceProps
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{
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velocityFieldName "U";
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interpolation "switch";
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};
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</PRE>
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<UL><LI><I>U</I> = name of the finite volume fluid velocity field
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<LI><I>switch</I> = flag to use interpolated stress values (normally off)
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</UL>
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<P><B>Examples:</B>
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</P>
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<PRE>forceModels
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(
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viscForce;
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);
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viscForceProps
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{
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velocityFieldName "U";
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}
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</PRE>
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<P><B>Description:</B>
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</P>
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<P>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).
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</P>
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<P><B>Restrictions:</B>
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</P>
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<P>none.
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</P>
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<P><B>Related commands:</B>
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</P>
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<P><A HREF = "forceModel.html">forceModel</A>
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</P>
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