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3-D fluent simulation on rotating arm

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Old   December 3, 2021, 06:30
Unhappy 3-D fluent simulation on rotating arm
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I am trying to find the coefficient of drag on the rotating arm, my arm is rotating at 16000 rpm which makes its tip to touch mach no greater than 1. the axis of rotation is passing through the center of the arm. the arm is rotating in ZX plane. I have created one cylindrical rotating domain around my arm surface and another stationary domain around that rotating domain and with option mesh motion I have given the rotation. But I am not getting the required coefficient of drag.
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