热声系统起振消振行为的实验研究  

EXPERIMENTAL INVESTIGATION ON THE ONSET AND DAMPING BEHAVIOR IN THE THERMOACOUSTIC OSCILLATIONS

作　　者：金滔[1] 陈国邦[1] 应哲强 徐友仁 冯绍苏 

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》2000年第1期27-31,35,共6页Cryogenics

基　　金：浙江省自然科学基金;国家自然科学基金

摘　　要：对热声系统的起振与消振行为进行了实验研究 ,发现存在热声振荡滞后回路。研究了不同加热方式 (对称加热与单向加热 )及充气压力对滞后回路的影响 ,得出一些令人感兴趣的结论。A hysteretic loop,a special loop due to the difference between the onset temperature and the damping temperature,is proposed in the thermoacoustic oscillation for the first time.It is confirmed by the experiments on a thermoacoustic prime mover with nitrogen as the working fluid.The influence of pressure and heating on the hysteretic loop is also investigated and some interesting results are presented.

关 键 词：热声驱动器 热声振荡 起振 消振 

分 类 号：TB66[一般工业技术—制冷工程]