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核聚变与等离子体物理 ›› 2022, Vol. 42 ›› Issue (4): 448-454.DOI: 10.16568/j.0254-6086.202204014

• 等离子体物理 • 上一篇    下一篇

平行壁变形导电管磁流体层流数值模拟

闫家玮,毛 洁,熊保龙   

  1. (杭州电子科技大学机械工程学院,杭州 310018) 
  • 收稿日期:2021-01-28 修回日期:2022-06-06 出版日期:2022-12-15 发布日期:2022-12-13
  • 作者简介:闫家玮(1992−),男,甘肃金昌人,硕士,从事磁流体动力学数值模拟研究。
  • 基金资助:
    国家自然科学基金(11375049);国家磁约束核聚变能发展研究专项(2014GB125003)

Numerical simulation of laminar MHD flows in conducting ducts with deformed parallel walls 

YAN Jia-wei, MAO Jie, XIONG Bao-long    

  1. (School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018) 
  • Received:2021-01-28 Revised:2022-06-06 Online:2022-12-15 Published:2022-12-13

摘要: 采用自主开发的基于 OpenFOAM 环境下的磁流体求解器,对外加横向均匀磁场的导电方管、平行 壁内凹导电管以及平行壁外凸导电管内的磁流体进行了层流数值模拟。在壁面电导率为 0.01、流体雷诺数为 500、 哈特曼数为 500~2000 的条件下,研究了三种导电管中液态金属磁流体速度分布和压降。结果表明:平行壁内凹 和外凸对速度分布具有显著影响;在相同参数条件下,平行壁内凹管的压降大于方管,而平行壁外凸管的压降小 于方管。

关键词: 磁流体动力学压降, 导电方管, 平行壁内凹导电方管, 平行壁外凸导电方管

Abstract:  In this paper, laminar MHD flows in a normal square duct, a duct with concave parallel walls and a duct with convex ones subjected to a uniform magnetic field are numerically studied using a self-developed solver in the OpenFOAM platform. The velocity distribution and the MHD pressure drop of flows in the three ducts are presented at Re=500, C=0.01 and Ha=500~2000. The results show that the concave or convex parallel walls change the velocity distribution significantly. The pressure drop in duct with concave parallel walls is larger than that in the square duct, while the pressure drop in duct with convex parallel walls is smaller than that in the square duct under the same parameters. 

Key words: Magnetohydrodynamic pressure drop, Square duct, Duct with concave parallel walls, Duct with convex parallel walls 

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