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51 lines
1.1 KiB
HTML
51 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>voidfractionModel_centreVoidFraction 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>voidfractionModel centre;
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centreProps
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{
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alphaMin number1;
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weight number2;
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}
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</PRE>
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<UL><LI><I>number1</I> = minimum limit for voidfraction
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<LI><I>number2</I> = (optional) scaling of the particle volume to account for porosity or agglomerations.
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</UL>
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<P><B>Examples:</B>
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</P>
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<PRE>voidfractionModel centre;
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centreProps
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{
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alphaMin 0.1;
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weight 1.;
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}
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</PRE>
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<P><B>Description:</B>
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<P>The centre voidFraction model calculates the voidfraction in a CFD cell accounting for the volume of the particles whose centres are inside the cell.
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</P>
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<P>The particle volume occupied in the CFD domain can be adjusted by the parameter "weight", using Vparticle=dsphere^3*pi/6*weight.
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</P>
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<P><B>Restrictions:</B> 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 = "voidfractionModel.html">voidfractionModel</A>
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</P>
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</HTML>
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