论文部分内容阅读
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．
This article mainly introduces the author’s work in the development of thermoacoustic resonator tube. The author successfully developed a thermoacoustic resonance tube experimental device system. The system uses chlorine as the working fluid. The system starts self-excited resonance when the temperature difference between the two ends of the thermoacoustic regenerator is about 310K. When the temperature difference is about 430K, the frequency is about 105.9Hz and the amplitude is about 1.5% Stable pressure wave, the corresponding sound power yield of about 21W. The impulse response of the thermoacoustic resonance tube system to the mechanical impact before self-excited resonance was experimentally studied, and the decay rate of the impulse response and the equivalent damping coefficient of the system under different temperature gradients were obtained. The thermoacoustic resonance at different temperature gradients Tube sound power yield and natural frequency of the system changes; at the same time also under different inflation pressure system start-up temperature gradient and natural frequency changes were studied. The experimental results obtained are compared with the results of theoretical calculations.