Fully developed fluid flow and heat transfer in rough annuli

被引：5

作者：

Ahn, SW ^{[1
]}

Kim, KC

机构：

[1] Gyeongsang Natl Univ, Dept Marine Engn, Inst Marine Ind, Tongyong 650160, Kyongnam, South Korea

[2] Pusan Natl Univ, Sch Mech Engn, Pusan 609735, South Korea

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 1998年 / 25卷 / 04期

关键词：

D O I：

10.1016/S0735-1933(98)00037-2

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The fully developed turbulent momentum and heat transfer in the concentric annuli with artificial roughness elements on smooth, inner, outer and both walls for three radius ratios of 0.26, 0.39 and 0.56 were experimentally and analytically studied. The mean velocity profiles, friction factors, positions of maximum velocities and zero shear stresses are measured with a Pitot tube and a X-type anemometry system. The study demonstrates that certain artificial roughness elements may be used to enhance heat transfer rates advantageously from the overall efficiency point of view. (C) 1998 Elsevier Science Ltd.

引用

页码：501 / 510

页数：10