驻波型热声发动机的数值模拟  

Numerical Simulation for Standing-wave Thermoacoustic Prime Moves

作　　者：凌虹[1] 罗二仓[1] 吴剑峰[1] 杨梅[2] 李晓明[2] 吴张华[1] 黄云[1] 

机构地区：[1]中国科学院理化技术研究所,北京100080 [2]浙江大学制冷与低温工程研究所,杭州310027

出　　处：《低温与超导》2003年第2期11-14,25,共5页Cryogenics and Superconductivity

基　　金：国家自然科学基金资助 (合同号 :5 9976 0 44 )。

摘　　要：通过对驻波发动机热声边界条件的分析 ,给出了一种用“打靶法”进行迭代运算的循环模式 ,从而避开繁重的矩阵运算 ,计算效率得到有效地提高。最后以一个实例证明本方法计算结果与实验吻合较好。The behavior of thermoacoustic waves in a helium-filled standing-wave prime mover is numerically studied. The thermoacoustic equations have been developed for the calculation of time-averaged energy fluxes for devices operating at low pressure amplitudes. Here we present details for a thermoacoustic calculation method, shooting target method, for standing-wave heat engine. A large thermoacoustic engine is studied as a case study. It is showed that the code can run well for most operating conditions of interests and output whatever results the user is interested in, typically temperature, pressure amplitude, impedance, and acoustic power at various location, and operating frequency.

关 键 词：驻波型热声发动机 数值模拟 打靶法 热声 边界条件 循环模式 压缩机 

分 类 号：TB652[一般工业技术—制冷工程] TK1[动力工程及工程热物理—热能工程]