[rajann_786]

I am using Ansys Fluent. We are trying to simulating the nanofluids fluid flow with the help of multi-phase mixture model.
My question is that while putting the value in 'phase interaction section', using 'Schiller and Naumann model', there is one option in Drag factor. I want to know 'What is the drag factor?' (because in Schiller and Naumann model there is Drag function (f_drag) no option for Drag factor.)

Please see the images...

Schiller&Naumann_Equation.png

confusion.jpg

[Amar Kad]

hi rajann
this nanofluids flow in a pipe or around a body
try to define drag function using UDF

[rajann_786]

Originally Posted by Amar Kad

hi rajann
this nanofluids flow in a pipe or around a body
try to define drag function using UDF

Thanks to Amar Kad for Reply.
My only doubt is 'what is drag factor?'
Because in ''Schiller and Naumann model'' no term regarding drag factor. But drag function is there in ''Schiller and Naumann model'' equation. Is both term 'drag factor and drag function' in fluent are same ?

[Amar Kad]

Originally Posted by rajann_786

Thanks to Amar Kad for Reply.
My only doubt is 'what is drag factor?'
Because in ''Schiller and Naumann model'' no term regarding drag factor. But drag function is there in ''Schiller and Naumann model'' equation. Is both term 'drag factor and drag function' in fluent are same ?

i do not know because i have the same problem
sorry