Fluid Solid Interaction

Shabi1992 · November 15, 2015, 03:09

Hello,

I am working with Ansys and coupling transient structural with CFX.
There is a flexible plate in a fluid and the fluid pass it with mean velocity 1 m/s. The plate has no slip boundary.
when I solve it and survey the contour of velocity I see the flow near the plate has no velocity but the flexible plate has vibrations and moves...
how can I change the set up to see the velocity of fluid near plate equal the velocity of plate?

Regards,
Shabi

ghorrocks · November 15, 2015, 06:47

Have a look at the interface boundary condition at the wall and see whether the velocity is set relative to mesh motion or absolute frame. You will probably want it relative to mesh motion.

Shabi1992 · November 15, 2015, 15:48

Quote:

Originally Posted by ghorrocks

Have a look at the interface boundary condition at the wall and see whether the velocity is set relative to mesh motion or absolute frame. You will probably want it relative to mesh motion.

Thank you, I checked it again and for Interface boundary Mesh motion was chosen...

November 15, 2015, 03:09	Fluid Solid Interaction	#1
Shabi1992 New Member Join Date: Oct 2015 Posts: 28 Rep Power: 11	Hello, I am working with Ansys and coupling transient structural with CFX. There is a flexible plate in a fluid and the fluid pass it with mean velocity 1 m/s. The plate has no slip boundary. when I solve it and survey the contour of velocity I see the flow near the plate has no velocity but the flexible plate has vibrations and moves... how can I change the set up to see the velocity of fluid near plate equal the velocity of plate? Regards, Shabi

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November 15, 2015, 06:47		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	Have a look at the interface boundary condition at the wall and see whether the velocity is set relative to mesh motion or absolute frame. You will probably want it relative to mesh motion.