文章摘要
邓晓辉,李青,杨光,姚伟,郭方中.热声谐振管的实验研究[J].,1998,17(2):21-25
热声谐振管的实验研究
Experimental study on thermoacoustic resonant tube
  
中文摘要:
      本文主要介绍作者在热声谐振管研制方面的工作.作者成功地研制了热声谐振管实验装置系统.该系统采用氯气为工质,系统在热声回热器两端的温差约为310K时开始自激谐振,在温差约为430K时,可以获得频率为105.9Hz,波幅约为1.5%平均压力的稳定压力波,相应的声功产率约为21W.实验研究了热声谐振管系统在自激谐振之前对机械冲击的脉冲响应,得到了不同温度梯度下脉冲响应的衰减率及系统相应的等效阻尼系数;实验研究了不同温度梯度下热声谐振管的声功产率和系统固有频率的变化;同时还对在不同充气压力下系统的起振温度梯度及固有频率的变化进行了研究.所得实验结果与理论计算的结果进行了比较.
英文摘要:
      Self-oscillations have been successfully achieved in the thermoacoustic resonant tube system in this report. The thermoacoustic resonant tube charged with nitrogenstarts self excited oscillation at the temperature difference of 310 K imposed on the thermoacoustic regenerator. The amplitude of sound pressure reaches 1.5% of the meanpressure (5 bar) at 430 K, the intrinsic frequency is 105.9 Hz, and the sound power iscorrespondingly 21 W. The attenuation coefficient of the impulse response and the meandamping coefficient of the system at various temperature difference below the onset ofoscillation are measured. Further studies are focused on the dependence of sound powerand intrinsic frequency of the system on the temperature difference; the onset temperature difference of the system with differeat charging pressure is also studied. Comparisonbetween the theoretical results and the experimental results are given.
DOI:10.11684/j.issn.1000-310X.1998.02.005
中文关键词: 热声谐振管  自激谐振  实验研究
英文关键词: Thermoacoustic experiments  Resonant tube  Self-excited oscillation
基金项目:国家自然科学基金
作者单位
邓晓辉 华中理工大学低温教研室!武汉
430074 
李青 华中理工大学低温教研室!武汉
430074 
杨光 华中理工大学低温教研室!武汉
430074 
姚伟 华中理工大学低温教研室!武汉
430074 
郭方中 华中理工大学低温教研室!武汉
430074 
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