How to access first derivative of Udmi???

October 21, 2006, 12:49

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.

October 23, 2006, 07:23

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

October 21, 2006, 12:49	How to access first derivative of Udmi???	#1
Asghari Guest Posts: n/a	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.

October 23, 2006, 07:23	Re: How to access first derivative of Udmi???	#2
RoM Guest Posts: n/a	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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