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莫长彩,徐亮亮,王思睿,王国情,李磊.带加热偏流的声衬对热声不稳定性的控制方法[J].航空动力学报,2019,34(7):1510~1518
带加热偏流的声衬对热声不稳定性的控制方法
Control method of thermoacoustic instability with sound lining with heating bias flow
投稿时间:2018-12-24  
DOI:10.13224/j.cnki.jasp.2019.07.012
中文关键词:  Rijke管  热声不稳定  穿孔板背腔  偏流  被动控制
英文关键词:Rijke tube  thermoacoustic instability  perforated plate with back cavity  bias flow  passive control
基金项目:国家自然科学基金(51676126)
作者单位
莫长彩 上海交通大学 机械与动力工程学院,上海 200240 
徐亮亮 上海交通大学 机械与动力工程学院,上海 200240 
王思睿 上海交通大学 机械与动力工程学院,上海 200240 
王国情 上海交通大学 机械与动力工程学院,上海 200240 
李磊 上海交通大学 机械与动力工程学院,上海 200240 
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中文摘要:
      通过实验方法研究了热声不稳定性极其被动控制方法。搭建了水平放置的Rijke管热声不稳定性实验装置,采用电加热的热丝作为热源。实验中发现加热功率及加热丝前后空气的温度比对热声不稳定性的发声强度有着一定的影响。实验中尝试了采用背腔和穿孔板结构的声衬对热声不稳定性进行控制。其中背腔中可以通入偏流空气,且偏流空气的流量、温度均可以调节。实验发现:背腔中通入偏流空气可以增强对不稳定性的抑制效果,且随偏流速的增加,控制效果变好。此外,发现提高偏流空气的温度对提高声衬对热声不稳定性的控制效果作用不明显。
英文摘要:
      The passive control method of thermoacoustic instability was researched through experimental methods. A horizontally placed Rijke tube, a thermoacoustic instability experimental device, was set up; and an electrically heated hot gauze was used as a heat source in Rijke tube. It was found in the experiment that the temperature of the air before and behind the hot gauze had a crucial effect on the amplitude of the thermoacoustic oscillations. Moreover, sound linings with back cavity and perforated plate structures were used to control thermoacoustic instability. The bias air can be drained into the back chamber, and the flow and temperature of the bias air can be adjusted. It was also found that the biased air in the back cavity can enhance the inhibitory effect on the instability, and the effect became better with the increase of the bias flow rate; in addition, increasing the temperature of the biased air can not significantly increase the control effect of sound linings on thermoacoustic instability.
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