Hi Everyone,
I have a liquid-air mixture in a closed domain where I am trying to simulate it via ansys/fluent. I used the mixture multi-phase model with no mass transform (as a start as the flow is laminar). The results are good from pressure point of view. However, the air volume fraction remains constant (as initialised value) all over the domain. I expected that it will be very tiny as pressure goes high and get higher in lower pressure. Any interpretation for this? Alternatively, is there a method to adjust the volume fraction manually via a udf as a function of pressure. I mean to give the solver the volume fraction via udf rather than solving it?
Kind regards
Wael
what is your simulation exactly?
cavitation, evaporation?? if there is no secondary phase in domain at first time, so it must see later by defining these process. unless that no secondary flow defines for simulation or pressure depend conditions don't apply correctly.
Thank you Hossien for your reply. I have solved it as I discovered a mistake in the phase definition.
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