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.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
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)
关键词
非稳态
周期性
自维持振荡
unsteady
periodicity
self-sustained oscillation
