| 轴流压气机非定常分离流动耦合控制实验 |
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| 引用本文： | 李志平,李秋实,袁巍,陆亚钧,吴玉林.轴流压气机非定常分离流动耦合控制实验[J].航空动力学报,2009,24(5):1071-1078. |
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| 作者姓名： | 李志平 李秋实 袁巍 陆亚钧 吴玉林 |
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| 作者单位： | 1.北京航空航天大学 能源与动力工程学院 航空发动机气动热力重点实验室, 北京 100191 |
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| 基金项目： | 国家重点基础研究发展计划“973”项目:大型风力机的空气动力学基础研究(2007CB714600) |
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| 摘 要： | 在一台单级低速轴流压气机试验台上,利用外部声激励,研究控制非定常流动分离的途径.重点考察了激励频率与压气机流场内典型的非定常特征频率的耦合关系以及激励强度、激励信号波形对轴流压气机非定常分离流动控制的影响.实验结果表明:激励频率和激励强度是分离流动控制中较为重要的两个参数,而激励信号波形的变化对分离流动控制也会产生一定影响(相对激励频率、幅值而言较弱).当激励频率为最优频率且幅值达到某一阈值之后,非定常流动分离能够得到有效推迟或抑制,压气机时均气动性能也会大幅度提升,其总压升特性相对值可提高约3.3%.
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| 关 键 词： | 流动控制 轴流压气机 非定常分离流 |
| 收稿时间： | 5/21/2008 6:54:43 AM |
| 修稿时间： | 2008/6/30 0:00:00 |
Experimental study on cooperative control of unsteady separated flow in axial-flow compressors |
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| LI Zhi-ping,LI Qiu-shi,YUAN Wei,LU Ya-jun and WU Yu-lin.Experimental study on cooperative control of unsteady separated flow in axial-flow compressors[J].Journal of Aerospace Power,2009,24(5):1071-1078. |
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| Authors: | LI Zhi-ping LI Qiu-shi YUAN Wei LU Ya-jun and WU Yu-lin |
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| Institution: | 1.National Key Laboratory on Aero-Engines, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China2.Department of Thermal Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | The control methods of large-scale separated flows inside a low-speed axial-flow compressor facility were investigated by external acoustic excitations.The focus of research was put on the coupling relationship between excitation frequency and typical shedding frequency of unsteady separation vortex,while the influences of excitation amplitude and the types of the excitations signal wave on the flow control were explored.The experimental results indicate that the excitation frequency and excitation amplitud... |
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| Keywords: | flow control axial-flow compressor unsteady separated flow |
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