| 流体动力激励法控制射流结构的初步研究 |
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| 引用本文： | 张青藩,李锋,钟波,周辉华.流体动力激励法控制射流结构的初步研究[J].航空动力学报,1996,11(3):309-311,334. |
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| 作者姓名： | 张青藩 李锋 钟波 周辉华 |
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| 作者单位： | 南京航空航天大学，南京航空航天大学２０５教研室 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 在射流马赫数分别为０．２０６、０．３６１及０．８３１三种工况下，用环形卡门涡街激励射流。对３种不同几何参数的环形卡门涡街发生器，利用总压探针分别测定了激励前后射流速度的轴向分布和径向分布，得到了射流气动参数和涡街发生器几何参数对射流激励效果的影响。还利用单丝热线分别测定了激励前后射流边界层的紊流参数，结果表明，激励之后射流边界层的紊流脉动能量显著增加，这是射流激励后吸卷能力提高的内在动力。
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| 关 键 词： | 激励射流边界层 卡门涡 控制 |
| 收稿时间： | 7/1/1995 12:00:00 AM |
| 修稿时间： | 9/1/1995 12:00:00 AM |
A PRELIMINARY INVESTIGATION ON CONTROLLING JET STRUCTURE BY HYDRODYNAMIC EXCITATION |
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| Zhang Qingfan,Li Feng,Zhong Bo and Zhou Huihua.A PRELIMINARY INVESTIGATION ON CONTROLLING JET STRUCTURE BY HYDRODYNAMIC EXCITATION[J].Journal of Aerospace Power,1996,11(3):309-311,334. |
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| Authors: | Zhang Qingfan Li Feng Zhong Bo and Zhou Huihua |
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| Institution: | 2nd Dept.Nanjing University of Aeronautics and Astronautics, Nanjing 210016;2nd Dept.Nanjing University of Aeronautics and Astronautics, Nanjing 210016;2nd Dept.Nanjing University of Aeronautics and Astronautics, Nanjing 210016;2nd Dept.Nanjing University of Aeronautics and Astronautics, Nanjing 210016 |
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| Abstract: | Jets were excited by Karman Vortex Streets under three conditions of Jet Mach Number 0 206,0 361 and 0 831.Three vortex generators with different geometries were tested.Jet Velocity distributions with and without excitation were measured by stagnation presure probe.The turbulent characteristics in the jet boundary layer were detected by a single hot wire probe.It is shown that excited jet velocity decay faster than that of unexcited jet,and turbulent energy in jet boundary layer is significantly increased by votex excitation.Therefore,jet structure can be effectively controlled by hydrodynamic excitations. |
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| Keywords: | Excitation Jets Boundary layer Karman vortex Control |
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