热声制冷机回热器的数值研究  

Numerical investigation of the stack in the thermoacoustic refrigerator

作　　者：高岗[1,2] 谢秀娟[1] 李青[1] 赵爽[1,2] 

机构地区：[1]中国科学院低温工程学重点实验室(理化技术研究所),北京100190 [2]中国科学院研究生院,北京100049

出　　处：《低温与超导》2011年第6期1-5,12,共6页Cryogenics and Superconductivity

基　　金：国家自然科学基金资助项目(50806081)

摘　　要：以驻波型热声制冷机的回热器作为研究对象,通过对二维可压缩形式的连续性方程、N-S方程、能量方程和理想气体状态方程的数值求解,得到了热声核区域内工作介质的能流密度矢量和能量迹线云图。结果表明:在轴向方向上影响能量传递的主要因素为气体的热传导项。The stack of the standing - wave thermoacoustic refrigerator was studied, the hydro - and thermodynamical processes near and within a thermoacoustic couple were simulated and analyzed by numerical solution of the compressible Navier - Stokes, continuity, and energy equations for an ideal gas, concentrating on the time - averaged energy flux density in the gas. Energy flow density vector and energy flow density trace cloud were obtained within computational domain. The main effect of energy transfer in the axial direction was the heat conduction term.

关 键 词：热声 回热器 能流密度矢量 

分 类 号：TB651[一般工业技术—制冷工程]