热声起振过程的实验研究  

Experiment of self-oscillating process in a thermoacoustic Stirling engine

作　　者：刘靖[1] 邱利民[1] 赖碧翚[1] 王虎[1] 王波[1] 白昆[1] 孙大明[1] 

机构地区：[1]浙江大学制冷与低温研究所,杭州310027

出　　处：《低温工程》2008年第1期19-23,44,共6页Cryogenics

基　　金：教育部博士后基金(20060335120);教育部新世纪优秀人才资助计划(NCET-06-0521);中国博士后科学基金(20060390332)资助

摘　　要：起振过程是热声现象的重要部分之一。在自行研制的混合型热声发动机系统中对起振过程进行了实验研究,通过分析起振过程的压力、频谱变化,总结出起振过程中储能、起振、饱和3个阶段的特性,并分析了亥姆霍兹共鸣器对起振阶段的影响,通过与国外相似实验结果进行对比,指出了之间的共同点以及差异,为开展热声起振机理研究提供了参考。As one of the most important processes of thermoacoustic effect, the self-oscillating process in a thermoacoustic Stirling engine was experimentally studied. By the analysis of pressure and spectrum, the characteristics of three stages, energy storing, onset and saturation of self-oscillating process were revealed. The influence of the Helmholtz resonator on self-oscillating process was also given. The results were compared with the Sakamoto＇ s experiment results at last .

关 键 词：热声效应 起振过程 频谱分析 

分 类 号：TB651[一般工业技术—制冷工程] TB661