Experimental study on two-phase flow instability in helically coiled tube under rolling motion

被引：0

作者：

Wang, Ruohao ^{[1
]}

Qi, Chao ^{[2
]}

Ren, Jiaxing ^{[1
]}

Li, Xin ^{[1
]}

Qiao, Shouxu ^{[1
]}

Tan, Sichao ^{[1
]}

Tian, Ruifeng ^{[1
]}

机构：

[1] Harbin Engn Univ, Heilongjiang Prov Key Lab Nucl Power Syst & Equipm, Harbin 150001, Peoples R China

[2] Shanghai Spaceflight Precis Machinery Inst, Shanghai 201600, Peoples R China

来源：

ANNALS OF NUCLEAR ENERGY | 2025年 / 210卷

基金：

中国国家自然科学基金;

关键词：

Flow instability; Forced circulation; Helically coiled tube; Rolling condition; HEAT-TRANSFER CHARACTERISTICS; NATURAL CIRCULATION; CHANNELS; SYSTEM;

D O I：

10.1016/j.anucene.2024.110835

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：

Helically coiled tube under ocean conditions will subject to serious two-phase flow instability. This study experimentally investigated two-phase flow instabilities in a helically coiled tube under static and rolling conditions. Under static condition, Density Wave Oscillation (DWO), Pressure Drop Oscillation (PDO), and Thermal Oscillation (TO) are observed, and the stability map for DWO is established. Under rolling condition, Singlephase flow oscillation, PDO, and DWO are observed, and compared to the phenomena of static condition. It is found that rolling condition can induce flow oscillation, making the DWO and PWO more severe. Through Fast Fourier Transform (FFT) analysis, it is found that impact of rolling conditions on flow instability diminishes as heating power is increased. In addition, the parameter effects of inlet subcooling, volumetric flow rate, system pressure, rolling angle and rolling period on flow stability are investigated.

引用

页数：10

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