Experimental Investigation of the Wake behind a Sphere at Low Reynolds Numbers
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概要
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Wakes produced by a sphere moving in a tank of water were photo-graphically investigated at Reynolds numbers from 5 to 300. Main results obtained are as follows. 1. The critical Reynolds number at which the parmanent vortex-ring begins to form in the rear of a sphere is about 24. 2. The size of vortex-ring is nearly proportional to the logarithm of the Reynolds number. 3. The wake behind a sphere begins to oscillate at the rear of the permanent vortex-ring when Reynolds number of about 130 is reached.
- 社団法人日本物理学会の論文
- 1956-10-05
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