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Eulerian model and (friction) packing limit

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Old   August 18, 2008, 08:22
Default Eulerian model and (friction) packing limit
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Rok Sibanc
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Can anyone please explain me difference between Friction Packing Limit and Packing Limit?

Greetings, Rok
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Old   September 4, 2008, 04:41
Default Re: Eulerian model and (friction) packing limit
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Roberto Arevalo
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Hello,

the Packing Limit is the maximun packing fraction you want to allow in your simulation.

When the packing fraction is higher than the value fixed for the Friction Packing Limit, FLUENT adds the contribution from Frictional Viscosity to the other viscosities (bulk, collisional, granular). You have to choose a model or fix a constant value (or a UDF). IF Friction Packing Limit=Packing Limit then Frictional Viscosity will be equal to 0 always.

I have obtained better results choosing Johnson model for Frictional Viscosity and Solids Pressure.

Hope it will help,

Roberto

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Old   January 30, 2014, 03:03
Default Packing Fraction
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shahid
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shahid nadeem is on a distinguished road
Mr Robert
can you tell me what is packing fraction
shahid nadeem is offline   Reply With Quote

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