| 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。 |
| 关键词: 合成射流+ 速度测量 性能分析 |
| DOI： |
| 分类号:V211.7 |
| 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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| Experimental study on velocity characteristics of synthetic jet actuator |
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ZHENG Xin-qian, ZHOU Xiao-bo, HOU An-ping, ZHOU Sheng
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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. |
| Key words: Synthetic jet~+ Velocity measurement Performance analysis |
