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-   -   How to get Velocitygradient (https://www.cfd-online.com/Forums/cfx/25114-how-get-velocitygradient.html)

Sebastian January 28, 2008 13:23

How to get Velocitygradient
 
I m wondering how to get the Gradients for the Velocity in Stn Frame..

For example:

Velocity in Stn Frame u.Gradient X

I never had a problem getting the gradiensts for a stationary domain but since we are using a rotating domain i cant find them in Post. I also tried creating a new Variable by setting Velocity in Stn Frame u.Gradient X for the expression. But the system told me that Velocity in Stn Frame u.Gradient X does not exist. By the way i m using ansys cfx 11

I would realy appreciate some help since a large part od my diplomathesis depends on this values.

regards Sebastian

Sebastian January 31, 2008 11:01

Re: How to get Velocitygradient
 
HI

does realy nobody has an idea how to transform the velocitygradients of the relativesystem to velocitygradients of an absolutsystem?

I realy appreciate any kind of help !

regards Sebastian



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