Moving floor/ground approximation?

cjarrett · January 20, 2010, 00:52

I'm working with CFDesign doing some basic analysis of wings and diffusers on racecars, and having trouble getting my head around how I would simulate the ground moving beneath the car such as in a rolling road windtunnel? Basically the air needs to move twice as fast past the ground compared to the model.. any ideas?

Thanks,

f-w · January 20, 2010, 11:53

Ground moves with same velocity as the air. You need to impose a tangential velocity to the ground in your simulation.

cjarrett · January 20, 2010, 13:06

Much appreciated, I'm not familiar with that in CFDesign but I'll give it a shot.

January 20, 2010, 00:52	Moving floor/ground approximation?	#1
cjarrett New Member Join Date: Jan 2010 Posts: 4 Rep Power: 16	I'm working with CFDesign doing some basic analysis of wings and diffusers on racecars, and having trouble getting my head around how I would simulate the ground moving beneath the car such as in a rolling road windtunnel? Basically the air needs to move twice as fast past the ground compared to the model.. any ideas? Thanks,

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January 20, 2010, 11:53		#2
f-w Senior Member Join Date: Apr 2009 Posts: 154 Rep Power: 17	Ground moves with same velocity as the air. You need to impose a tangential velocity to the ground in your simulation.

January 20, 2010, 13:06		#3
cjarrett New Member Join Date: Jan 2010 Posts: 4 Rep Power: 16	Much appreciated, I'm not familiar with that in CFDesign but I'll give it a shot.