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-   -   Background eddy diffisivity (http://www.cfd-online.com/Forums/cfx/18757-background-eddy-diffisivity.html)

sim December 7, 2001 06:58

Background eddy diffisivity
 
Hello, all.

I am using CFX4.3's standard k-e model for wind calculation and need to set eddy diffusivity as a background value. The formula I use is Nu=0.09*k^2/eps

However the value is nearly zero at any points. I would like to give more large value of eddy diffusivity to the background. Is there another way to do it?? So far, I have no idea how to set it.

If you experienced similar problems, please let me know.

Thanks very much, sim.


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