Hot-wire measurements have been carried out in the turbulent flow around a rotating circular cylinder in still air for Reynolds numbers Re = |U_w|D/v = 1.5 * 10~4 to 10~5. The experimental results confirm the analysis derived by asymptotic theory for high Reynolds numbers. Two different ways of deriving the friction law from the experiments (via shear stress and via velocity distribution) resulted practically in the same law. It is shown, that in spite of the curvature of the streamlines the universal logarithmic velocity distribution is still valid near the wall.
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机译：雷诺数Re = | U_w | D / v = 1.5 * 10〜4到10〜5，在静止空气中围绕旋转的圆柱体的湍流中进行了热线测量。实验结果证实了由渐近理论得出的高雷诺数分析。从实验得出摩擦定律的两种不同方法（通过剪切应力和通过速度分布）实际上是在同一定律中得出的。结果表明，尽管流线是弯曲的，但普遍的对数速度分布在壁附近仍然有效。
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