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-   -   using UDF for fluttering movement ( oscillating motion ) ??! (https://www.cfd-online.com/Forums/fluent-udf/114618-using-udf-fluttering-movement-oscillating-motion.html)

 bluAero March 14, 2013 05:22

using UDF for fluttering movement ( oscillating motion ) ??!

I am aeronautical engineering student, and I have graduate project named
Flexible wing .
And is a flexible wing featuring movement of the upper surface flutter .. Means the upper surface moves up and down (the top surface shown in green in the below pic), and this process improvement aerodynamics properties of the wing ...

http://img443.imageshack.us/img443/457/15865343.jpg

Now I want a way in fluent program so make this a moving surface ( with its characteristics ) in fluent by usng UDF then to take readings required ..
the model is 2D ,,

i hope one of you will help me and explain to me how moving the upper surface .

 vasava March 14, 2013 06:18

What exactly you tried? Can you show your UDF.

 bluAero March 14, 2013 06:53

Quote:
 Originally Posted by vasava (Post 413940) What exactly you tried? Can you show your UDF.
I meant i couldn't make UDF ..

I want to know how to make it for this problem ,

 vasava March 14, 2013 07:23

Read the tutorial Using a UDF to Control the Dynamic Mesh of a
Flexible Oscillating Membrane
. It might help. The UDF is at the end of the pdf.

If you can find I can mail it to you.

 bluAero March 14, 2013 07:43

Quote:
 Originally Posted by vasava (Post 413956) Read the tutorial Using a UDF to Control the Dynamic Mesh of a Flexible Oscillating Membrane. It might help. The UDF is at the end of the pdf. If you can find I can mail it to you.
i didn't find it .. please send it . and thanks :)

 Jiang June 18, 2013 08:40

Quote:
 Originally Posted by bluAero (Post 413962) i didn't find it .. please send it . and thanks :)
Hey

Iam also working on something similar and iam kind of stuck with UDF. i have read this post and tried looking for that PDF mentioned but the link were no longer valid. Could you possibly e-mail me a copy of that pdf to t_huang_3@msn.com thanks

 grayback87 June 20, 2013 05:33

Fluent has several guides.
One of them may help you, Fluent UDF guide. There you can find examples of moving mesh.