Full-scale numerical study on the flow characteristics and mal-distribution phenomena in SG steam-water separation system of an advanced PWR

被引：34

作者：

Fang, Di ^{[1
]}

Wang, Mingjun ^{[1
]}

Duan, Yuangang ^{[2
]}

Li, Jun ^{[1
]}

Qiu, Guihui ^{[2
]}

Tian, Wenxi ^{[1
]}

Zuo, Chaoping ^{[2
]}

Su, G. H. ^{[1
]}

Qiu, Suizheng ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Nucl Sci & Technol, Shaanxi Key Lab Adv Nucl Energy & Technol, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China

[2] China Nucl Power Design Co Ltd, Shenzhen 518172, Guangdong, Peoples R China

来源：

PROGRESS IN NUCLEAR ENERGY | 2020年 / 118卷

基金：

中国国家自然科学基金;

关键词：

Mal-distribution flow; Steam-water separation system; CFD; Full-scale analysis; HYDRAULIC CHARACTERISTICS; PERFORMANCE; MODEL; VANE; SIMULATION;

D O I：

10.1016/j.pnucene.2019.103075

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：

The steam-water separation system is of great importance to ensuring the steam quality in a PWR UTSG. In the present work, the full-scale three-dimensional CFD analysis is performed to study the mal-distribution steam flow in the system using ANSYS-FLUENT platform. A full-scale model of newly-designed PWR is established and all the sophisticated structures of 19 swirl-vane separators are modeled. Besides, the porous medium model is adopted to simplify the steam flow inside the dryers because of the complex structure of wave-type vanes. Employing CFD methodologies, detailed flow characteristics in the whole system are captured, especially the velocity fields of steam at inlets of 7 dryer units. The outcomes show that the maximum unit-area mass-flow rate appears at the entrance of #4 dryer which is in the central part of dryers. In addition, the maximum entry velocity is 2.136 m/s, while the velocity is decreased to 1.049 m/s, lower than the critical velocity, with the application of an orifice plate assembly with the perforation in different calibers on the plate. Also, the effect of the separator down-corner on the mal-distribution phenomenon is also analyzed. In general, the current work could be expected to be a basis for the future optimization on moisture separation components in the steam generator.

引用

页数：11

共 34 条

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