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-   -   multiphase in fluent 5.5 (http://www.cfd-online.com/Forums/fluent/29033-multiphase-fluent-5-5-a.html)

fawzy November 2, 2001 17:28

multiphase in fluent 5.5
 
I m using the algebraic slip mixture model in stirred tank and i want to use the secondary phase cell velocity in some UDF. so my question it's true to use this name (argument): C_U_S(cell, thread) for the x secondary phase cell velocity ?

thanks

Isa November 5, 2001 04:42

Re: multiphase in fluent 5.5
 
Hi!

As a matter of interest, what is your volume fraction of solids?

fawzy November 5, 2001 13:34

Re: multiphase in fluent 5.5
 
Hi Isa

I don't use dispersed solid phase. I use the ASMM for gas sparging in mixed tank. So it is no limitation for the gas volume fraction as gas density << primary fluid density. See always "On mixture model for multiphase flow", Manninen & Taivassalo, VTT energy, VTT publications 288. available via the web in pdf format (67 pages).

Have you any idea about my question ? thanks

Best regrads fawzy

fawzy November 8, 2001 12:06

secondary phase velocity ??? with ASMM
 
I m using the algebraic slip mixture model in stirred tank and i want to use the secondary phase cell velocity in some UDF. How can i access to its name (argument)

Isa November 12, 2001 06:46

Re: secondary phase velocity ??? with ASMM
 
Hi!

You didn't answer my querstion before on the dispersed phase volume fraction.

I know you said that you are using ASMM, but my question was relating to validity of the use of ASM. To be able to use ASm with any accuracy at all, your solids (disperse) VF will have to be very low (< 1%).

What is the physical disperse VF of solids that you have?



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