I have two-phase flow in the annular regime inside a pipe, laminar liquid and turbulent vapor in the core. Is it possible to assign two different models in ANSYS fluent for each phase (e.g. laminar for the liquid phase and k-w model for vapor)? If it's possible, please recommend a resource to achieve it.
I think it's possible if you have UDF proficiency and builind specific code for turbulency part. Moreover, the following suggestions can be useful:
1- Set your turbulent model and then in the BC, put 0 for the turbulence of laminar zone.
2- If you use two volumes for each phase, select your laminar region in the BC menu and select the 'Laminar Zone' option. It's important to set the face separating the two volumes to interior.
https://www.cfd-online.com/Forums/fluent/45490-turbulence-models-two-different-fluids.html
Hi Ahmed Elsayed,
maybe the kappa-omega model with an inclusion of the Intermittency Transition model would help you. Read more about it in the theory guide. It will model the turbulence locally. Thus, in the regions with a low Re - number, the flow will be laminar, and in the regions with high Re - number the turbulent model will be considered.
Best of luck!
Antoni Artinov
Thank you Meisam Ansarpour & Antoni Artinov. I'll try your recommendations
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