Learning Forum

[Muhammad Jayyaad Arshad]

Respected!

I am new to using Ansys fluent. I am combustion and use heat of combustion to boil water.

I have achieved combustion using species transport model. But my problem is with Multiphase model. I have define 3 phases, phase 1; water liquid, phase 2; water vapour and phase 3; combustion species. 

There is no interaction between phase 1 and 2 to phase 3. I can't remove the interfacial area between phase 3 and phase 1 in phase interaction of multiphase model.

I have set none for virtual mass, drag, lift, wall lubrication, turbulence dissipation, turbulence interaction, heat and surface tension between phase 3 and phase 1 and 2. I have use single mechansim of mass transfer from water liquid to vapour.

 

I have used 0 reactions in reaction option as I have select methane air two step reaction using species transport. 

My question is: As there no interaction between phase 1 and 2 to phase 3 but multiphase model shows that there is interaction in all three phases?

My second question: Is there is a way to extract heat flux or temperature on surface and use separate fluent model for phase change of liquid water to vapour and how can I achieve it?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[Rob]

Have a look at profiles for data transfer between models. 

Note, combustion and multiphase (especially phase change) are not simple topics. Start by understanding the solver with basic flow and work from there. I'd treat your scenario with caution and I've got some experience with the software (and easy access to experts). 

[Muhammad Jayyaad Arshad]

Thanks Sir for guidance.