External Aero-boundary condition. -- CFD Online Discussion Forums

April 14, 2006, 20:31	External Aero-boundary condition.	#1
Guest Guest Posts: n/a	Dear All, I have a question regarding boundary condition setup for external aero problems. I have a car model with tyres of a certain radius. The car is supposed to be travelling at 20m/sec. My questions are: 1. Do I define the moving ground as Relative or Absolute? 2. Velocity inlet is 20m/sec, relative or absolute. 3. Spinning tyre X rads/sec, relative or absolute. Many thanks in advance.

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