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1Streamwise vortex generation by the rod显示文摘The technology development related to aerodynamics is leading to ever increasing loads of wings, airfoils and turbine and compressor blades. The increase in aerodynamic forces is often leading to flow separation and depreciation of the aerodynamic performance of flying objects or propulsion systems. Flow control methods are required to avoid these negative effects. In the recent two decades the flow control by means of air-jet vortex generators has been also intensively investigated. In this method a streamwise vortex is introduced by an oblique jet. The necessity to supply air by a pipe system may be considered a disadvantage. In order to eliminate this feature, it has been proposed to put out a rod instead of a jet. It has been shown that the application of a rod can introduce the same effect as a jet, as long as the streamwise vortex generation is concerned and appropriate dimensions are used. The present paper focuses on the influence of rod vortex generators on a flow pattern downstream. The results presented here concern experimental and numerical investigations and provide guidelines for the design of a new flow control method dedicated mainly to external flows.Ryszard SZWABA Pawel FLASZYNSKI Piotr DOERFFER 2019Chinese Journal of Aeronautics2019,32,8:2
2超声速气流中激波/边界层干扰微射流控制研究进展显示文摘激波/边界层干扰现象在超声速流场中不可避免,这种现象的存在会对超声速飞行器内外流场产生一系列的不利影响。所以,对激波/边界层干扰现象进行控制是十分必要的。微射流主动流动控制方法近年来已成为流动控制领域的研究热点。本文梳理了近年来微射流主动流动控制方法对激波/边界层干扰控制的相关研究进展,综合分析了影响单孔微射流和微射流阵列控制效果的因素,并对目前研究的不足和发展前景进行了探讨,以期对相关研究提供参考。徐浩 杜兆波 钟翔宇 黄伟 2022航空兵器2022,29,4:2
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