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UDF for the mixture model

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Old   July 31, 2008, 06:29
Default UDF for the mixture model
khar nab
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Hello the mixture model needs the dispersed phase diameter for the calculation of the slip velocity. I can not understand why this diameter in FLUENT can be integrated using a UDF (variable) while the mixture model employs a constant value. How can a variable diameter affect the mixture model equations. I mean if we suppose that the dispersed phase at a boundary condition is constituted of a particles distributed according to a given law, what would this change in the mixture model calculations and results. I want to know also what is the advantages provided by TGrid.
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