Hu Zhongjun, Li Qing, Xie Xiujuan, Zhou Gang, Li Qiang
Technical Institute of Physics and Chemistry, CAS, Beijing, PR China.
Ultrasonics. 2006 Dec 22;44 Suppl 1:e1515-7. doi: 10.1016/j.ultras.2006.08.004. Epub 2006 Aug 28.
A miniature cascade thermoacoustic engine had been designed and tested, which length was about 1m, operating at 500 Hz. Pilot study and experimental results shown a rather good agreement between measured and calculated pressure fields and temperatures distributions in the thermoaoustic engine. The peak-to-peak value of the acoustic pressure was 0.02 MPa at the 1.8 MPa charged pressure of helium. Some efforts had been made to extend the traveling-wave region based on the analysis of the acoustic impedance.
设计并测试了一台微型级联热声发动机，其长度约为1米，工作频率为500赫兹。初步研究和实验结果表明，热声发动机中测量得到的压力场和温度分布与计算结果相当吻合。在氦气充压为1.8兆帕时，声压的峰峰值为0.02兆帕。基于声阻抗分析，已做出一些努力来扩展行波区域。
