|July 12, 2014, 08:19||
Advices about cavitation/single phase flow
Join Date: Oct 2010
Posts: 899Rep Power: 15
Hi all my friends,
I'm studying a problem in which cavitation is involved and it's not negligible in the domain.
The domain in mainly composed by a series of rotors and I'm trying to solve the problem by mrf and sliding mesh.
Physics of the problem should require turbulent +multiphase (mixture) + cavitation models, however I'm having a lot of problems in converging the solution because as you know, cavitation problems are in general difficult to converge.
Main goal is to calculate power required by the rotors.
So, I was thinking about running my problem in single phase flow:
1- Loop across cells and faces at every iteration to find pressures<vapor pressure and force them to the vapor pressure (UDF)
2- Let cells and faces to have negative absolute pressures, and later considering that in these cells cavitation occurs
So my question:
a) Does it make sense to run my problem in single phase?
b) If a) is true, what's the best option between 1) and 2)?
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