两种波纹板通道内的流动及换热比较  

COMPARISON STUDY OF FLOW AND HEAT TRANSFER CHARACTERISTICS IN TWO KINDS OF WAVY CHANNELS

作　　者：李海朋[1] 刘钊[1] 丰镇平[1] 

机构地区：[1]西安交通大学叶轮机械研究所,陕西西安710049

出　　处：《工程热物理学报》2008年第10期1755-1758,共4页Journal of Engineering Thermophysics

基　　金：国家高技术研究发展计划资助项目(No.2004AA503020)

摘　　要：采用非稳态算法,计算了周期性正弦型和三角形两种波纹板通道内的流动和换热,比较了它们的平均阻力系数和平均努赛尔数.结果表明,在较大流量下,两种通道内的流动均出现了自维持振荡现象,但是两者相比正弦型通道波纹板的换热和压降均较大。The flow and periodical triangle channel heat transfer performances both in periodical sinusoidal channel and in were calculated using a unsteady numerical methods, and their average resistance coefficients and average Nu numbers were compared with each other. The results indicate that self-sustained oscillations flow appears in the two kinds of channels when the mass flux is great over a fixed value. But flow and heat transfer performance are different in the two kinds of wavy channels, and the heat transfer and pressure lose in the sinusoidal channel are larger than that in the triangle channel.

关 键 词：非稳态 周期性 自维持振荡 

分 类 号：TK124[动力工程及工程热物理—工程热物理]