[ahmadoil157]

Hi to all, I had a critical issue with my Fluent set-up. I would appreciate it if any one could help me.

I am performing a gas-liquid simulation in a Venturi tube at high velocity. I have a liquid film on the pipe wall (liquid in) and a gas core (gas + liquid droplet). I want to apply VOF-DPM, in which VOF processes the interface of liquid film and gas core and DPM processes liquid particles. I am setting up the fluent based on a paper. My main issue is how to set Sauter mean square (d32) for liquid droplets; I cannot find it. At first, I set the discrete injection first, then selected the multiphase model as Multifluid-VOF model. I can see the sauter mean (interfacial area concentration) (capture 3), but no phase transition (vof-dpm) can be selected! Then, when I set to VOF as the model (previously ticked the Hybrid in the discrete injection) (capture4) I can set VOF-DPM, but not able to find Sauter mean diameter (capture5). Could you please help what to do, I guess I am missing one part of the set-up. Also the paper didnot use any udf for droplet diameter.


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