摘要
利用热质比拟原理及茶升华技术,对空气横掠滴形管的局部换热系数进行了测量。实验结果表明:在实验的Reynolds数范围内,滴形管迎流面上的局部换热系数分布与圆管前半部(分离点以前)相似;但在分离点之后,两者的局部换热系数分布差异很大;而且滴形管的局部换热系数分布与Reynolds数密切相关。
Experiments have been performed in which the heat-mass transfer analogy and the naphthalene sublimation technique were employed to measure the locat heat transfer coefficients of a drop-shaped tube in crossflow of air. The experimental results show that over the whole Reynolds number range tested the distribution of local heat transfer coefficients on the upstream part of a drop-shaped tube is similer to that of a circuiar one but in the downstream part (after the Separation Point) they are greatly different from each other. And the local heat transfer coeff icient distribution is related to the Reynolds number.
出处
《青岛科技大学学报（自然科学版）》
CAS
1990年第4期40-45,共6页
Journal of Qingdao University of Science and Technology:Natural Science Edition
关键词
滴形管
局部换热系数
茶升华技术
drop shaped tube
local heat transfer
Naphthalene sublimation technique
