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External Aero-boundary condition.

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Old   April 14, 2006, 19:31
Default External Aero-boundary condition.
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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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