环形流道的热声学特性分析  

Thermoacoustic characteristics of annular channel

作　　者：余国瑶[1] 戴巍[1] 罗二仓[1] 陈燕燕[1] 吴张华[1] 

机构地区：[1]中国科学院理化技术研究所

出　　处：《低温与超导》2006年第3期152-156,共5页Cryogenics and Superconductivity

摘　　要：从线性热声理论出发,推导了环形流道的横向分布函数表达式。在此基础上比较了等截面积环形流道与圆管的阻抗特性;针对一定工况,计算比较了两者沿管长的压力体积流率分布情况。该表达式对于设计小型同轴型热声系统以及简化热声系统的CFD模拟具有重要意义。In this paper, solution based on the linear thermoaeoustie theory of transverse functions fμ and fκ for annular channel is given in detail. Comparison of the acoustic impedances as well as the dynamic pressure and volume velocity distributions along the main axis are made between annular channel and circular pipes with the same cross section area. These transverse functions for annular channel are important to the design of the coaxial thermoacoustic systems and the simplification of CFD simulation of the traveling wave thermoacoustic systems.

关 键 词：环形流道 横向分布函数 

分 类 号：TB651[一般工业技术—制冷工程] TQ051.25[化学工程]