# How to simulate the rotation and revolution of an object in Fluent?

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 March 17, 2023, 02:21 How to simulate the rotation and revolution of an object in Fluent? #1 New Member   HagawaArashi Join Date: Mar 2023 Posts: 4 Rep Power: 3 Hello everyone! I want to simulate a wing which flapping and waving in the water. This wing will revolve around the Z axis at a periodic rate, meanwhile, it will rotate around its own axis of symmetry. At first, I used the DEFINE_CG_MOTION, but the result wasn't what I want. So I consider to use the DEFINE_ZONE_MOTION. Now I can realize the rotation of the wing, but how to realize the revolution at the same time? Thank you in advance of the help!

March 26, 2023, 00:42
#2
New Member

Bakhshi Mehul
Join Date: Mar 2023
Posts: 5
Rep Power: 3
Quote:
 Originally Posted by HagawaArashi Hello everyone! I want to simulate a wing which flapping and waving in the water. This wing will revolve around the Z axis at a periodic rate, meanwhile, it will rotate around its own axis of symmetry. At first, I used the DEFINE_CG_MOTION, but the result wasn't what I want. So I consider to use the DEFINE_ZONE_MOTION. Now I can realize the rotation of the wing, but how to realize the revolution at the same time? Thank you in advance of the help!
Hey HagawaArashi!
I am also working on a case where rotation and revolution of a cylindrical domain is involved. Kindly let me know if you are able to figure out something.

April 4, 2023, 04:38
#3
New Member

HagawaArashi
Join Date: Mar 2023
Posts: 4
Rep Power: 3
Quote:
 Originally Posted by Bakhshi Hey HagawaArashi! I am also working on a case where rotation and revolution of a cylindrical domain is involved. Kindly let me know if you are able to figure out something.
Hello Bakhshi! You can try the DEFINE_ZONE_MOTION! Set a zone as the absolute motion zone, and another as the relative zone. You can use these settings in the Cell Zone Conditions.