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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Spray water particles not injected › Reply To: Spray water particles not injected

October 8, 2024 at 8:44 am
Rob
Forum Moderator

The film will move based on gravity and local flow, and it's likely the film is very thin. That can cause issues with momentum as another droplet hits the cell. Drop the film time step (or increase the number of film sub steps) to aim for a CFL around 0.05 and see how it behaves. The film calculation is generally fast relative to the flow so more film steps shouldn't slow things down too much. 

Do you need to be solving for energy? Just wondering how significant the temperature changes will be on the solution?Â