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How to access first derivative of Udmi???

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Old   October 21, 2006, 11:49
Default How to access first derivative of Udmi???
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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.


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Old   October 23, 2006, 06:23
Default Re: How to access first derivative of Udmi???
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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).

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