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-   -   How to access first derivative of Udmi??? (http://www.cfd-online.com/Forums/fluent/42635-how-access-first-derivative-udmi.html)

Asghari October 21, 2006 11:49

How to access first derivative of Udmi???
 
Hi all;

I have a important question . I appricated everybody reply me.

How can i access first derivative of my UDM (User define memory) with respect to x direction in my udf code? (for instance by C_UDMI_G[0]? i do'nt know,really),Please help me.

Best regards.

Asghari.


RoM October 23, 2006 06:23

Re: How to access first derivative of Udmi???
 
Fluent does not calculate anything for UDM's so you cant access the gradient of an UDM. A possible workaround is to use an UDS instead of an UDM. Set flux function to "none" and the diffusivity to a very small value (say 1e-20).

RoM


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