I want to simulate the gas-solid flow in a cyclone seaprator by means of the mixture model in Fluent.In my work, the inlet particle size accords with R-R distribution. At the other hand, in mixture model, we only can give one particle size. Therefore, I want to consider the different particle size by adding the number of the phase,i.e. phase 1 is 1 micron, and phase 2 is 5 micron, and so on. I don't know if this method can satisfy my need. Hope someone who has the experiences in this can help me. Thanks in advance.

Just a thought! why not use Eulerian multiphase model? and use UDF for different particle size distribtuion?

Thanks for Aly's response. In my mind Eulerian multiphase model, we could not use for different particle size distribution which is the same as the mixture model.