Linear drag law for high-Reynolds-number flow past an oscillating body

Linear drag law for high-Reynolds-number flow past an oscillating body

An object immersed in a fast flow typically experiences fluid forces that increase with the squar...概要を表示 An object immersed in a fast flow typically experiences fluid forces that increase with the square of speed. Here we explore how this high-Reynolds-number force-speed relationship is affected by unsteady motions of a body. Experiments on disks that are driven to oscillate while progressing through air reveal two distinct regimes: a conventional quadratic relationship for slow oscillations and an a

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