[Gasim]

Hi
I'm setting up 2D multiphase boiling model in Ansys 16, In the options of diameter from "Phases>> Secondary phase>> Diameter " I don't find "sauter-mean". how can I add it please?

[kamel86]

hello, you should enable the interfacial area concentration for secondary phase. thanks

[Gasim]

Thanks Kamel, it gave a good result. But I could not set "sauter-mean" as boiling diameter.

[longcwang3]

Hi, are you using Fluent 18.2? How is boiling-dia calculated?

[Gasim]

I'm using ANSYS 16.0
Boiling-dia is a function of local sub-cooling [T(sat)-T(liq)]

[longcwang3]

Originally Posted by Gasim

I'm using ANSYS 16.0
Boiling-dia is a function of local sub-cooling [T(sat)-T(liq)]

Is it the same as Bubble Departure Diameter?

[ali72p]

Originally Posted by Gasim

Hi
I'm setting up 2D multiphase boiling model in Ansys 16, In the options of diameter from "Phases>> Secondary phase>> Diameter " I don't find "sauter-mean". how can I add it please?

sauter-mean is only available when you are using mixture model.

[kiarashniroumand]

hi everyone i am working on a multiphase fluid simulation in fluent . that is pipe that have a saturated vapor with a cooled wall . after simulation with a acceptable residuals and the temperature contours was good but about volume of fraction of each phase there is no good results and all fluid domain have a constant volume fraction . indeed i wanna calculate amount of condensed liquid . is there anyone can help me ? its so necessary for me ...

and also i m sorry of my bad english :|

here is my email : kiarashniroumand@gmail.com

[pejuangCFD]

Originally Posted by ali72p

sauter-mean is only available when you are using mixture model.

i could not find sauter-mean also when i applied the mixture model. need your support. thanks