合成射流方向布局对S形进气道分离控制的效应

何鹏; 董金钟

doi:10.13224/j.cnki.jasp.2015.02.007

合成射流方向布局对S形进气道分离控制的效应

doi: 10.13224/j.cnki.jasp.2015.02.007

何鹏,
董金钟

北京航空航天大学能源与动力工程学院, 北京 100191

详细信息

作者简介:
何鹏(1985-),男,湖南益阳人,博士生,主要从事发动机内流空气动力学、流动控制研究.

中图分类号: V231.3
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- 被引次数: 0
出版历程
- 收稿日期: 2013-09-27
- 刊出日期: 2015-02-28

Effect of slot orientation on synthetic jet-based separationcontrol in a serpentine inlet

School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 对合成射流控制一种S形进气道边界层分离进行了数值研究.选用狭缝出口的合成射流,详细讨论了展向和流向两种布局对控制效应的影响.结果显示:流向布局相对展向布局具有抗逆压梯度强、穿透深、控制效果持久等特点,在射流动量系数为1.62×10^-3,特征频率等于1的工况下,其分离区长度缩减了38.39%.流向布局对S形进气道性能的提升也更显著,出口压力系数比无控制时提高158.91%,总压恢复系数提高0.71%,总压畸变指数降低56.75%.
- 主动控制 /
- 边界层分离 /
- 合成射流 /
- 方向布局 /
- S形进气道
Abstract: A numerical study was conducted to investigate synthetic jet-based boundary layer separation control in a serpentine inlet. Rectangular slots were chosen in this study, spanwise and streamwise orientations of these slots were discussed in detail. The results illustrate streamwise oriented synthetic jet has a higher resistance to the adverse pressure gradient. It penetrates deeper and exhibites stronger persistence than spanwise case as well. When jet momentum coefficient is equal to 1.62×10^-3, and the characteristic frequency is 1, separation length is reduced by 38.39% relative to uncontrolled flow field. The performance of serpentime inlet using streamwise oriented synthetic jet are also superior to spanwise case. Outlet pressure coefficient is increased by 158.91%; total pressure recovery coefficient is increased by 0.71%, and total pressure distortion coefficient is reduced by 56.75%.
- active control /
- boundary layer separation /
- synthetic jet /
- slot orientation /
- serpentine inlet

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参考文献(24)

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