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Multiphase model issue linked with hot air injeted into the water

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Old   March 7, 2016, 11:07
Default Multiphase model issue linked with hot air injeted into the water
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Hello Forum friends, I was expected to simulate the evaporator in which the hot air was injeted into the water via a tube and form bubbles before those bubbles exchange heat and mass with the surrounding water. For a test model I use 2d model.

I use mixture model, alongside with species model in which I create water(vapor)+ air mixture. I set the interaction between the phase of water(vapor)+air and the water(liquid) and I was hoping to see the bubbles in the contours via the difference of volume fractions, but I failed.

So my questions are:

1. Have I been in the right path of simulating the interaction between air, water vapor and water liquid? If so, I would appreciate if someone can tell me how to deal with the outlet BC

2. How should I set up my Fluent conditions to get to my goal of observing the evaporating rate?

3. Should I use VOF instead?

I have been struggling with this topic and I would appreciate any answers you would give.

Best wishes and many thx

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air-water interface, mixture model, multiphase flow

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