An Official Journal of the American Society of Thermal and Fluids Engineers

Kauf $35.00 Check subscription MARC-Eintrag herunterladen Zu Zitationsmanager hinzufügen

Zitat im Format EndNote herunterladen Zitat im Format RefWorks herunterladen Zitat im Format BibTex herunterladen

Measuring of the Magnus Force at Moderate Reynolds Numbers

ABSTRAKT

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.