Volume 20, Issue 11 (October 2020)                   Modares Mechanical Engineering 2020, 20(11): 2629-2642 | Back to browse issues page

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askary F, Soltani M. Experimental study of the Magnus effect on a rotating projectile. Modares Mechanical Engineering 2020; 20 (11) :2629-2642
URL: http://mme.modares.ac.ir/article-15-44408-en.html
1- sharif university of technology , farshid_askary@yahoo.com
2- sharif university of technology
Abstract:   (1822 Views)
A new experimental technique has been developed to measure the pressure distribution over the surface of a spinning wind tunnel model. The technique is unique in that all elements of the instrumentation, thus avoiding many of the technical problems and operational limitations associated with previous attempts to measure this effect. Surface pressure distributions were obtained for selected tip speed ratios for different angles of attack. The results obtained from the pressure profiles determine the Magnus forces and make it possible to interpret the boundary layer and the effects of separation. The pressure distribution on the surface of the model for rotational speeds up to 5000 rpm is obtained at different angles of attack. The results show that most of the Magnus force is created at the ends of the projectile. The validity of the data was established by comparing the integrated pressure values with directly measured balance data. The resulting pressure profiles provide a quantitative measure of the Magnus forces and allow interpretation of boundary layer and flow separation effects. Similar results were obtained by the numerical simulations and were compared with the experimental data. This new technique can be applicable to a variety of model configurations and Mach number regimes.
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Article Type: Original Research | Subject: Computational Fluid Dynamic (CFD)
Received: 2020/07/13 | Accepted: 2020/09/5 | Published: 2020/09/5

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