Abstract

Abstract Detailed computations have been carried out, on the basis of Oseen's approximation to the hydrodynamic equations of motion, of the flow pattern around a uniformly translated sphere at Reynolds numbers, R, of 1, 4 and 10. A strongly marked wake is apparent even at the lowest Reynolds number. The boundary of the wake becomes more marked as R increases and is bounded by a thin layer in which the fluid motions are particularly small and of rapidly changing direction. No vortex is attached to the rear of the sphere even at R= 10, although the presence of a ‘boundary layer’ to the front is well indicated.

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