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volume fraction variation secondary phase

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Old   May 15, 2012, 08:57
Default volume fraction variation secondary phase
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i'm modelling a gas-solid reaction packed bed with the eulerian multiphase model.
I specified the rate reaction with an UDF and i initialized a volume fraction for the solid phase ugual to 0.6
My question is.. can reaction rate comport changes in volum fraction? or volume fraction is indipendent from the reaction rates specified in the udf?
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