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-   -   how to disable energy equation for for non-newton (http://www.cfd-online.com/Forums/fluent/28400-how-disable-energy-equation-non-newton.html)

yueroo April 3, 2001 02:48

how to disable energy equation for for non-newton
 
Hi: I want to set power law model for Non-Newtonian Viscosity .but I don't want to solve energy equation. I set power law model for Non-Newtonian .and give k,n to describe my Non-Newtonian fluid. When I set boundary condition ,and give fluid matirial. FLUENT will enable energy equation. I try to disable energy equation. But it can't to disable energy equation. someone one can tell me how to set power law model for non-newtonian fluid but not enable energy equation thanks!!

Anthony Wachs April 3, 2001 12:12

Re: how to disable energy equation for for non-new
 
Hi,

I faced the same problem some weeks ago. I did not manage to disable energy equation resolution too. Thus, to prevent Fluent from calculating the temperature field, I defined an UDF for a non-newtonian power law model that does the same as the one defined in Fluent, but without temperature dependance. And it works very well...

Anthony

yueroo April 3, 2001 22:11

Re: how to disable energy equation for for non-new
 
Hi: I don't use UDF,can you tell me your cod for non-newtonian power law model . thanks!!


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