Correlation of interfacial friction for countercurrent gas-liquid flows in nearly horizontal pipes

被引：3

作者：

Murase, Michio ^{[1
]}

Yamamoto, Yasunori ^{[2
]}

Kusunoki, Takayoshi ^{[1
]}

Kinoshita, Ikuo ^{[1
]}

Tomiyama, Akio ^{[3
]}

机构：

[1] Inst Nucl Safety Syst Inc, 64 Sata, Mihama, Fukui 9191205, Japan

[2] Hokkaido Univ, Inst Nucl Safety Syst Inc, Sapporo, Hokkaido, Japan

[3] Kobe Univ, Nada Ku, 1-1 Rokkodai, Kobe, Hyogo 6578501, Japan

来源：

NUCLEAR ENGINEERING AND DESIGN | 2017年 / 320卷

关键词：

Hot leg; Pressurizer surge line; Countercurrent flow limitation; 2-PHASE FLOW; HOT-LEG; SCALE; LIMITATION;

D O I：

10.1016/j.nucengdes.2017.06.020

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：

We previously developed a one- dimensional (1-D) computation method with parameters adjusted from CCFL (countercurrent flow limitation) data in hot leg and pressurizer surge line models to generalize the prediction method for CCFL in nearly horizontal pipes. In the 1-D computation method, the constant value for the interfacial friction coefficient of fi = 0.03 was used. On the other hand, many correlations for the interfacial friction coefficient in horizontal and inclined pipes have been proposed. In this study, therefore, we carried out 1-D computations for CCFL in nearly horizontal pipes with the diameter of D = 0.03-0.75 m and the length to diameter ratio of L/D = 4.5-63 by using some selected correlations for the interfacial friction coefficient, which are a function of the gas or liquid Reynolds number. As a result, we confirmed that the correlation of the interfacial friction coefficient in terms of the Reynolds number cannot be used for large Reynolds numbers but fi = 0.03 can be used for the wide range of diameters. To improve the correlation with the gas or liquid Reynolds number, we proposed a modified correlation. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：418 / 426

页数：9