simple 2D rotating disk-with rigid body

dyson · June 22, 2016, 04:19

hello
i want to rotate a simple 2D rotating disk with rigid body(only rigid body).
(attached pic)
fixed rpm about disk center at all time - move in straight line-transient.

plz help if possible

ghorrocks · June 22, 2016, 06:20

Does the disc just follow a known path, or is it deflected by the forces acting on it? Are you interested in start up transients or just steady state?

It appears you can model this using an inlet velocity which includes both the ambient fluid speed and the ring motion. This means the ring is stationary, and the rotation can be modelled by tangential wall velocity. This is MUCH easier than what you propose.

dyson · June 25, 2016, 02:53

hello
-transient from start
-external force applied to disk
- rigid body motion only

thanks

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June 22, 2016, 06:20		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,741 Rep Power: 143	Does the disc just follow a known path, or is it deflected by the forces acting on it? Are you interested in start up transients or just steady state? It appears you can model this using an inlet velocity which includes both the ambient fluid speed and the ring motion. This means the ring is stationary, and the rotation can be modelled by tangential wall velocity. This is MUCH easier than what you propose.

June 25, 2016, 02:53	re	#3
dyson New Member dyson ilia Join Date: Feb 2016 Posts: 20 Rep Power: 10	hello -transient from start -external force applied to disk - rigid body motion only thanks