Flow characteristics of single-phase flow in narrow annular channels

被引：1

作者：

Zeng H. ^{[1
,2
]}

Qiu S. ^{[1
]}

Su G. ^{[1
]}

Jia D. ^{[1
]}

机构：

[1] School of Energy and Power Engineering, Xi'an Jiaotong University

[2] College of Nuclear Science and Technology, Harbin Engineering University

来源：

Frontiers of Energy and Power Engineering in China | 2008年 / 2卷 / 4期

关键词：

Friction pressure drop; Narrow annuli; Single-phase flow;

D O I：

10.1007/s11708-008-0101-7

中图分类号：

学科分类号：

摘要：

The characteristics of single-phase flow in narrow annular channels were analyzed and theoretical model was proposed. Based on the present model, the theoretical calculation was performed to predict the flow characteristics for the developed flow in narrow annuli with the gap sizes of 1.0, 1.5 and 2.0 mm, respectively. The results were in good agreement with the experimental data. In addition, the gap size of narrow annuli has great impact upon the flow characteristics. The decrease of gap size reduces friction factor. The higher the Reynolds number, the more remarkable the effect of gap size upon friction coefficient during single-phase flowing through narrow annular channels. The effect of gap size upon friction coefficient is dependent on the Reynolds number, and will decrease with the decrease of the Reynolds number. © 2008 Higher Education Press and Springer-Verlag GmbH.

引用

页码：466 / 470

页数：4

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