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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.9

ISSN Print: 2152-5102
ISSN Online: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v31.i5.90
pages 515-521

Measuring of the Magnus Force at Moderate Reynolds Numbers

V. P. Yatsenko
Institute of General Power Engineering of National Academy of Sciences of Ukraine, Kyiv, Ukraine
V. V. Alexandrov
Institute of General Power Engineering of National Academy of Sciences of Ukraine, Kyiv, Ukraine

ABSTRACT

The Magnus force acting on a spinning spherical body blown up by an air flow is measured. In so doing, the spherical body placed on analytical scales was spinned and blown by the flow with a given velocity. The out-of-balance caused by the Magnus force was measured, and the CM coefficient in the Rubinow - Keller formula was determined. The dependence of CM upon two Reynolds numbers, Reω and Rep, in the ranges of 590 < Reω < 45000, 360 < Rep < 13500 was determined. At fixed Rep the value of CM decreases with the increase of Reω; while at Reω = const it increases. For low Reω the CM coefficient approaches to estimates by Rubinow and Keller. With using the obtained results literature data a generalizing formula for CM is offered.


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