Effects of Mach numbers on Magnus induced surface pressure

• 作者: F.ASKARY M.R.SOLTANI
• 来源期刊: 中国航空学报（英文版）
• 年，卷（期）: 2020,（12）
• 所属期刊栏目: Fluid Mechanics and Flight Mechanics
• 页码范围: 3058-3072
• 页数: 15页
• 语种: 英文

摘要

Experimental and numerical methods were used to investigate the Magnus phenomena over a spinning projectile. The pressure force acting on the surface of a spinning projectile was mea-sured for various cases by employing a relatively novel experimental technique. A set of miniature pressure sensors along with a data acquisition board, battery and storage memory were placed inside a spinning model and the surface pressure were obtained through a remotely controlled sys-tem. Circumferential pressures of the model for both rotational and static conditions were obtained at two different free stream Mach numbers of 0.4 and 0.8 and at different angles of attack. The results showed the ability of this new test method to measure the very small Magnus force via sur-face pressures over the projectile. The results provide a deep insight into the flow structure and illus-trate changes in the cross-flow separation locations as a result of rotation. Similar results were obtained by the numerical simulations and were compared with the experimental data.