| 合成射流速度特性的实验研究 |
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| 引用本文： | 郑新前,周晓勃,侯安平,周盛.合成射流速度特性的实验研究[J].推进技术,2005,26(6):504-507,525. |
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| 作者姓名： | 郑新前 周晓勃 侯安平 周盛 |
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| 作者单位： | 北京航空航天大学,航空发动机气动热力重点实验室,北京,100083 |
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| 基金项目： | 国家自然科学基金（50176001）;北京航空航天大学博士生创新性研究基金. |
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| 摘 要： | 利用热线风速仪，测量了某受激扬声器产生的合成射流的速度大小。详细测量了频率、功率、波形、空间距离等对合成射流平均速度、最大速度的影响。测量结果表明，所研究的合成射流激励器能够产生很大的射流速度：平均速度与最大速度分别达到42．5m／s和117m／s。合成射流速度强烈依赖于激励频率，测得3个共振频率分别为750Hz，1600Hz和2700Hz，在偏离共振频率时合成射流速度迅速减弱。
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| 关 键 词： | 合成射流^＋ 速度测量 性能分析 |
| 文章编号： | 1001-4055（2005）06-0504-05 |
| 收稿时间： | 2004-11-21 |
| 修稿时间： | 2004-11-212005-03-15 |
Experimental study on velocity characteristics of synthetic jet actuator |
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| ZHENG Xin-qian,ZHOU Xiao-bo,HOU An-ping and ZHOU Sheng.Experimental study on velocity characteristics of synthetic jet actuator[J].Journal of Propulsion Technology,2005,26(6):504-507,525. |
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| Authors: | ZHENG Xin-qian ZHOU Xiao-bo HOU An-ping and ZHOU Sheng |
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| Institution: | National Key Laboratory of Aircraft Engine,Beijing Univ, of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | Measurements of the velocity field in a synthetic jet emanating from a special excited speaker are conducted by hot-wire anemometer.The effect of excitation frequency,power,waveforms(sine wave,triangle wave,square wave),and spatial locations are examined in detail.The results show that time-averaged velocity and maximum velocity are up to 42.5m/s and 117m/s,respectively.The velocity of synthetic jet depends on excitation frequency strongly.There are three resonance frequencies(750Hz,1600Hz,2700Hz) and the velocity diminishes sharply when the excitation frequency is deviated from the resonance frequencies. |
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| Keywords: | Synthetic jet~+ Velocity measurement Performance analysis |
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