| 锯齿型扰流片对壁面压力分布的影响 |
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| 引用本文： | 张攀峰,王晋军,李亚臣.锯齿型扰流片对壁面压力分布的影响[J].北京航空航天大学学报,2002,28(4):424-427. |
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| 作者姓名： | 张攀峰 王晋军 李亚臣 |
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| 作者单位： | 北京航空航天大学飞行器设计与应用力学系 |
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| 摘 要： | 在风洞用电子扫描阀进行测压,研究了绕平板扰流片和锯齿扰流片分离流动的壁面压力分布.结果表明平板扰流片和锯齿扰流片均在上游x/h=-6处剪切层开始分离,并再附于下游x/h≈20的位置.锯齿扰流片横向位置的变化对壁面平均压力分布几乎没有影响,但通过锯齿槽流向的压力脉动一般大于通过锯齿尖点流向的脉动.从平均压力分布看,锯齿高度可以增加扰流片阻流效果,采用锯齿扰流片可以减小下游壁面压力的脉动.
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| 关 键 词： | 分离流动 锯齿 压力分布 流动再附 扰流片 |
| 文章编号： | 1001-5965(2002)04-0424-04 |
| 收稿时间： | 2000-11-13 |
| 修稿时间： | 2000年11月13日 |
Wall Pressure Distribution Induced by Saw-Tooth Flap |
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| ZHANG Pan-feng,WANG Jin-jun,LI Ya-chen.Wall Pressure Distribution Induced by Saw-Tooth Flap[J].Journal of Beijing University of Aeronautics and Astronautics,2002,28(4):424-427. |
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| Authors: | ZHANG Pan-feng WANG Jin-jun LI Ya-chen |
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| Institution: | Beijing University of Aeronautics and Astronautics, Dept. of Flight Vehicle Design and Applied Mechanics |
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| Abstract: | Wall pressure distribution induced by the saw-tooth flap has been investigated with electronic pressure scanner in wind tunnel. The results showed that the shear layer of the saw-tooth flap separated at x/h=(6 upstream and reattached at x/h≈20 downstream, which is the same with the plate flap; The transverse location of the flap has little influence on the mean pressure distribution, and the distribution of pressure fluctuation along the saw-tooth groove is greater than that along the saw-tooth tip; The saw-tooth can block the flow and much more effectively reduce the pressure fluctuation downstream. |
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| Keywords: | flow separation saw-teeth pressure distribution flow reattachment flap |
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