I need help in udf ,please.

pengcheng · January 4, 2012, 07:29

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

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

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 ...

January 4, 2012, 07:29	I need help in udf ,please.	#1
pengcheng New Member 鹏程 Join Date: Jan 2012 Posts: 8 Rep Power: 14	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.

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January 4, 2012, 11:12		#2
pengcheng New Member 鹏程 Join Date: Jan 2012 Posts: 8 Rep Power: 14	nobody?i need help.............

January 4, 2012, 14:17		#3
duri Senior Member duri Join Date: May 2010 Posts: 245 Rep Power: 17	Could you explain you problem clearly. Is airfoil moving or stationary? What do you mean by only section of airfoil is moving.

January 7, 2012, 09:47		#5
Micael Senior Member Micael Join Date: Mar 2009 Location: Canada Posts: 157 Rep Power: 18	You want change a solid wall geometry and hence deform the grid?