期刊
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
卷 197, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jweia.2019.104065
关键词
Magnus effect; Lift; Wind tunnel testing; Flow visualization; Magnus theoretical model
The Magnus effect is an aerodynamic phenomenon of great relevance, that has been studied from different perspectives. However, current knowledge of the Magnus effect in non-circular cylindrical bodies is limited. This paper presents the results of an experiment to study the flow behavior around different cylindrical bodies with 4, 6, 8, and 10 sides. A wind tunnel was used to measure the aerodynamic forces and to explain the fluid dynamic behavior through flow visualization tests. Aerodynamic force coefficients for each body were determined and classified according to both rotation rate and free stream velocity. To explain the experimental results, a fitting algorithm was created, allowing for the lift of the bodies to be predicted as a function of tip speed to wind speed ratio u/v and the number of sides (for cylindrical bodies with 4-10 sides).
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