Numerical investigation on the similarity of developing laminar flows in helical pipes

被引：14

作者：

Kim, Young In ^{[1
]}

Kim, Seong Hoon ^{[1
]}

Hwang, Young Dong ^{[1
]}

Park, Jong Ho ^{[2
]}

机构：

[1] Korea Atom Energy Res Inst, Taejon 305353, South Korea

[2] Chungnam Natl Univ, Taejon 305764, South Korea

来源：

NUCLEAR ENGINEERING AND DESIGN | 2011年 / 241卷 / 12期

关键词：

CONVECTIVE HEAT-TRANSFER; CURVED PIPE; COILED PIPES; VISCOUS-FLOW; TUBES; REACTOR; FLUID; TRANSITION; REGION; MOTION;

D O I：

10.1016/j.nucengdes.2011.09.020

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

This paper presents numerical investigations into the similarity of developing laminar flows at the entrance region of helical pipes. It is shown that the new characteristic parameters can be used to represent the flow development in helical pipes. The development of friction factor and flow pattern along with the characteristic parameters is not significantly affected by the variations of Reynolds number, dimensionless pitch, or curvature ratio at a given condition of modified Dean number and inlet velocity profile. The development of the friction factor is investigated in a modified Dean number range of 20-400, and a new correlation for the fully developed angles of laminar flows in helical pipes is proposed. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：5211 / 5224

页数：14

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