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-   -   I need help in udf ,please. (http://www.cfd-online.com/Forums/fluent-udf/95824-i-need-help-udf-please.html)

pengcheng January 4, 2012 07:29

I need help in udf ,please.
 
:confused:I want to have Numerical simulation of 0012 airfoil in fluent .But only a section of the wall of the 0012 airfoil is changing like cosine curve,that is only the y coordinate of this section is changing. Could you tell me how to achieve it? I had

to try to use the udf,but i didn't know how to achieve it. Thank

you for your help.

pengcheng January 4, 2012 11:12

nobody?i need help.............

duri January 4, 2012 14:17

Could you explain you problem clearly. Is airfoil moving or stationary? What do you mean by only section of airfoil is moving.

pengcheng January 5, 2012 11:26

Quote:

Originally Posted by duri (Post 337877)
Could you explain you problem clearly. Is airfoil moving or stationary? What do you mean by only section of airfoil is moving.

thank you .airfoil isn't moving. i mean that only a piece of wall is sinusoidal and the sinusoidal is function of time.

Micael January 7, 2012 09:47

You want change a solid wall geometry and hence deform the grid?

pengcheng January 7, 2012 11:09

Quote:

Originally Posted by Micael (Post 338229)
You want change a solid wall geometry and hence deform the grid?

yes,but i don't know how to use the DEFINE_GRID_MOTION of UDF ...


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