V.P.Yatsenko, V.V.Alexandrov Measurement of Magnus force at moderate Reynolds numbers |
Applied hydromechanics, Vol. 3 (75) ¹ 3, (2001) |
| We describe some results of our measurements of the Magnus force, acting on a rotating spherical body blown up by an air flow. A spherical body located on an analytical balance was rotated and blown by a flow with a given velocity.The out-of-balance caused by the Magnus force was measured, and the CM factor in the Rubinow-Keller formula was determined. The dependence of CM upon two Reynolds numbers Rew and Rep in a range 590<Rew<45000, 360<Rep<13500 was established. If Rep is fixed, the CM value decreases with increase in Rew. If Rew=const, CM increases with Rep, coming nearer to the value found Rubinow and Keller for small Rew. Using the obtained results and known data from the literature, we derive a generalizing formula for CM . |
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| TEXT LANGUAGE: Russian |