Pressure drop oscillation of steam-water two-phase flow in a helically coiled tube

被引：38

作者：

Guo, LJ ^{[1
]}

Feng, ZP ^{[1
]}

Chen, XJ ^{[1
]}

机构：

[1] Xian Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2001年 / 44卷 / 08期

基金：

中国国家自然科学基金;

关键词：

pressure drop type oscillations; steam-water two-phase flow; closed-circulation helically coiled tubing steam generator;

D O I：

10.1016/S0017-9310(00)00211-8

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Systematic investigations of pressure drop type oscillations and their thresholds were conducted for steam-water two-phase How in a uniformly heated, helically coiled tube. Experiments were conducted to obtain the critical conditions for the occurrence of pressure drop type dynamic oscillation in a closed-circulation helically coiled tubing steam generator. The study showed that different locations of the tank which provided a compressible gas volume (called compressible volume for short) corresponded to different oscillation initial boundaries as well as different oscillating amplitudes and time periods. Moving compressible volume from the inlet of the steam generator upstream could dramatically suppress the occurrence of pressure drop oscillation. Also, non-uniform heat flux distribution along the evaporating channel could change oscillating boundaries significantly, especially when higher heat flux was applied to the higher mass quality region. A study of pressure drop oscillation in various steam generator inclinations showed that gravity has little influence upon the oscillating boundaries. Based on the experimental observations, a set of new methods was first proposed to eliminate the occurrence of pressure drop oscillation. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：1555 / 1564

页数：10

共 24 条

[1]

BAI BF, 1997, J COMPUT PHYS, V14, P696

[2]

BAI BF, 1997, INT J THERMAL FLUID, V5, P39

[3]

BOURE JA, 1973, NUCL ENG DES, V25, P165, DOI 10.1016/0029-5493(73)90043-5

[4]

CHUNG JH, 1994, INT J HEAT MASS TRAN, V37, P42

[5]

Doan T., 1983, Int. J. Heat Fluid Flow, V4, P145, DOI [10.1016/0142-727X(83)90060-7, DOI 10.1016/0142-727X(83)90060-7]

[6]

EVANS NA, 1973, INT J HEAT MASS TRAN, V6, P567

[7]

FENG ZP, 1996, THESIS XIAN JIAOTONG

[8] Transient convective heat transfer in a helical coiled tube with pulsatile fully developed turbulent flow [J].

Guo, LJ ;

Chen, XJ ;

Feng, ZP ;

Bai, BF .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1998, 41 (19) :2867-2875

[9]

GUO LJ, 1989, THESIS XIAN JAIOT U

[10]

GUO LJ, 1997, INT J THERMAL FLUID, V5, P200

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