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Old   February 11, 2012, 10:57
Default Help with modelling a solid within a fluid
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Hi all,

I would like to ask for some help with a simulation I need to do.

I have a rectangular wind tunnel with air flowing through at a velocity of 10m/s

Inside the wind tunnel I need to include a small ball, like a tennis ball.

I would like to simulate the ball travelling through the wind tunnel due to the velocity of the wind whilst also dropping down due to gravitational acceleration.

How would I go about doing this? In particular I am unsure of the following things:

1) Do I assign the ball its own body and mesh?
2) Is it a multi-phase case with the fluid and ball being simulated as separate entities? If so how would I do this?
3) How do I go about including gravity in my simulation

Also I am using ICEM for meshing and CFX for the simulation.

Many thanks
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