Turbulent Wakes behind Two-Dimensional Bodies in a Uniform Shear Flow

概要

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An aspect of the turbulent far wakes behind symmetrical two-dimensional bodies placed in a uniform shear flow is theoretically described by means of the Oseen type of successive approximation on a uniform flow. The expression for the stream function is determined up to the second approximation both inside and outside the wake region, and the region in which the results of the perturbation analysis are valid is also determined. the theoretical velocity profiles in the wake are well compared with the experiments which were conducted with a circular cylinder proaching stream. It is also found that the profiles of the longitudinal turbulence intensity are almost symmetrical in the downstream neighbourhood of the obstacle, the asymmetry of the profiles increasing as the downstream distance is increased.
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