International Journal of Fluid Mechanics Research

ISSN for PRINT: 1064-2277

For Online Access

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2004, Volume31

Issue 5

113 pages

Issue price - $270.00

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

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 C_M coefficient in the Rubinow - Keller formula was determined. The dependence of C_M upon two Reynolds numbers, Re_ω and Re_p, in the ranges of 590 < Re_ω < 45000, 360 < Re_p < 13500 was determined. At fixed Re_p the value of C_M decreases with the increase of Re_ω; while at Re_ω = const it increases. For low Re_ω the C_M coefficient approaches to estimates by Rubinow and Keller. With using the obtained results literature data a generalizing formula for C_M is offered.

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