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-   -   How to use UDF to define a rotating wing (http://www.cfd-online.com/Forums/fluent/33417-how-use-udf-define-rotating-wing.html)

lyf April 7, 2004 02:13

How to use UDF to define a rotating wing
 
I want to realize the motion of a wing rotating around a axis by using the UDF. I assign the motion with the DEFINE_CG_MOTION macro, but I can't realize the wing(wall) rotate. How to do these? Whether the methods of sliding mesh and dynamic mesh can be use together ? thanks a lot !

FJ April 7, 2004 03:03

Re: How to use UDF to define a rotating wing
 
Hi,

If it is simple rotating motion, the sliding mesh is the best way because it's very easy . We do only set the angular velocity and the center of origin.

If a very complex motion is including, we have to use MDM.

I recommend the sliding mesh.

Thank you

FJ

lyf April 7, 2004 03:26

Re: How to use UDF to define a rotating wing
 
But I want to make the wing's locomotion in both rotation and linear motion. how to do it ? what is MDM. Thanks

FJ April 7, 2004 04:31

Re: How to use UDF to define a rotating wing
 
Hi,

MDM is a shortened form of the Moving Dynamic Mesh.

I think that your motion can be calculated only with moving mesh and the re-meshing is suitable.

Thank you

FJ


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