合成射流速度特性的实验研究

推进技术 ›› 2005, Vol. 26 ›› Issue (6): 504-507.

合成射流速度特性的实验研究

郑新前,周晓勃,侯安平,周盛

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;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;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;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

发布日期:2021-08-15
基金资助:
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

Experimental study on velocity characteristics of synthetic jet actuator

National Key Laboratory of Aircraft Engine,Beijing Univ.of Aeronautics and Astronautics,Beijing 100083,China;National Key Laboratory of Aircraft Engine,Beijing Univ.of Aeronautics and Astronautics,Beijing 100083,China;National Key Laboratory of Aircraft Engine,Beijing Univ.of Aeronautics and Astronautics,Beijing 100083,China;National Key Laboratory of Aircraft Engine,Beijing Univ.of Aeronautics and Astronautics,Beijing 100083,China

Published:2021-08-15

摘要/Abstract

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

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

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.