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Velocity of 3.5 for oscillating airfoil - logical?

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Old   April 13, 2006, 00:12
Default Velocity of 3.5 for oscillating airfoil - logical?
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I am simulating flow past an oscillating airfoil. It is oscillating up/down with a sin function ie y=sin(t). vel y, v=cos(t), hence, max v=1. Inlet velocity is u=1.

However, near the front top end of the airfoil, where a vortex is formed, I have velocity vectors as large as 3.5.

Is this logical? Hope someone can give some advice.

Thank you very much
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