Numerical analysis and optimization of 3D magnetohydrodynamic flows in rectangular U-bend

被引：25

作者：

He, Qingyun ^{[1
]}

Feng, Jingchao ^{[1
]}

Chen, Hongli ^{[1
]}

机构：

[1] Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei 230026, Anhui, Peoples R China

来源：

FUSION ENGINEERING AND DESIGN | 2016年 / 109卷

基金：

中国国家自然科学基金;

关键词：

Magnetohydrodynamic (MHD) flow; U bend; Pressure drop; LIQUID-METAL FLOW; STRONG MAGNETIC-FIELD; HEAT-TRANSFER; MHD; BLANKET;

D O I：

10.1016/j.fusengdes.2015.12.036

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：

Liquid metal flow in rectangular bends is a common phenomenon of fusion liquid metal blanket operation, in which the velocity distributions and magnetohydrodynamic (MHD) pressure drop are considered as critical issues. Previous studies mainly aimed at specific fixed geometry for bend flows in LM blanket. The present investigation focuses on numerical analysis of MHD flow in 3D rectangular bends at laminar conditions, which is aimed to reduce MHD pressure drop caused by electromagnetic coupling in conductive flow, especially in bend corner region. The used code has been developed by University of Science and Technology of China (USTC) and validated by recommended benchmark cases such as Shercliff, ALEX experiments and KIT experiment cases, etc. In order to search the optimal duct bending, certain parameters such as different aspect ratio of the duct corner area cross-section, distance of import and export from the elbow and wall conductance ratio have been considered to investigate the pressure drop of MHD flow. Moreover, the effects of different magnetic field direction relative to flow distribution between bends have also been analyzed. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：1313 / 1317

页数：5

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