[Samia_Sadaf]

I am simulating water flow boiling through rectangular microchannel using Multiphase VOF model (evaporation-Condensation Mechanism)
Why we have to take number of eulerian phases =3
i.e. Air as Primary phase, Liquid water and Liquid Vapor as Secondary phases.

Can't we take 2 i.e. Water-Liquid as 'Primary Phase' and Water-Vapor as ' Secondary Phase' (as I see no boiling with 2 phases)
Please guide
Thanks in advance

[bidax]

Originally Posted by Samia_Sadaf

I am simulating water flow boiling through rectangular microchannel using Multiphase VOF model (evaporation-Condensation Mechanism)
Why we have to take number of eulerian phases =3
i.e. Air as Primary phase, Liquid water and Liquid Vapor as Secondary phases.

Can't we take 2 i.e. Water-Liquid as 'Primary Phase' and Water-Vapor as ' Secondary Phase' (as I see no boiling with 2 phases)
Please guide
Thanks in advance

I am currently working on flow boiling simulations using the VOF and LEE models. However, I have encountered an issue where the results do not seem to be reasonable. It appears that the LEE model does not account for nucleate boiling, which is critical for my analysis.

Could you kindly advise if there is a User-Defined Function (UDF) based on the LEE model that can simulate flow boiling more accurately?

Additionally, I have tried using the EULER-RPI model, but I have encountered difficulties with convergence. The computational resources required are also quite high, and the simulation takes a long time to run. Unfortunately, I do not have access to high-performance computing hardware.

Any guidance or suggestions you could provide would be greatly appreciated.

Thank you for your time and assistance.