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倾斜非均匀磁场下导电方管磁流体管流的数值模拟研究

毛洁 王彦利 王浩

毛洁, 王彦利, 王浩. 倾斜非均匀磁场下导电方管磁流体管流的数值模拟研究[J]. 力学学报, 2018, 50(6): 1387-1395. doi: 10.6052/0459-1879-18-276
引用本文: 毛洁, 王彦利, 王浩. 倾斜非均匀磁场下导电方管磁流体管流的数值模拟研究[J]. 力学学报, 2018, 50(6): 1387-1395. doi: 10.6052/0459-1879-18-276
Mao Jie, Wang Yanli, Wang Hao. DIRECT NUMERICAL SIMULATION OF MHD FLOW IN CONDUCTING SQUARE DUCTS WITH INCLINED FRINGING MAGNETIC FIELD[J]. Chinese Journal of Theoretical and Applied Mechanics, 2018, 50(6): 1387-1395. doi: 10.6052/0459-1879-18-276
Citation: Mao Jie, Wang Yanli, Wang Hao. DIRECT NUMERICAL SIMULATION OF MHD FLOW IN CONDUCTING SQUARE DUCTS WITH INCLINED FRINGING MAGNETIC FIELD[J]. Chinese Journal of Theoretical and Applied Mechanics, 2018, 50(6): 1387-1395. doi: 10.6052/0459-1879-18-276

倾斜非均匀磁场下导电方管磁流体管流的数值模拟研究

doi: 10.6052/0459-1879-18-276
基金项目: 1) 国家自然科学基金(11375049,61473253) 和科技部国际热核聚变实验堆(ITER) 计划专项课题(2014GB125003) 资助项目.
详细信息
    作者简介:

    null

    2) 毛洁,教授,主要研究方向:磁流体动力学. E-mail: maojie@hdu.edu.cn

    通讯作者:

    毛洁

  • 中图分类号: TL3;

DIRECT NUMERICAL SIMULATION OF MHD FLOW IN CONDUCTING SQUARE DUCTS WITH INCLINED FRINGING MAGNETIC FIELD

  • 摘要: 热核聚变反应堆液态金属包层应用中的一个重要问题是液态金属在导电管中流动和强磁场相互作用产生的额外的磁流体动力学压降.这种磁流体动力学压降远远大于普通水力学压降.美国阿贡国家实验室ALEX研究小组,对非均匀磁场下导电管中液态金属磁流体动力学效应进行了实验研究,其实验结果成为液态金属包层数值验证的标准模型之一.液态金属包层在应用中会受到不同方向的磁场作用,本文以ALEX的非均匀磁场下导电方管中液态金属管流实验中的一组参数为基础,保持哈特曼数、雷诺数和壁面电导率不变,采用三维直接数值模拟的方法,研究了外加磁场与侧壁之间的倾角对导电方管内液态金属流动的速度、电流和压降分布的影响.研究结果表明:沿流向相同横截面上的速度、电流以及压力分布均随磁场的倾斜而同向旋转.倾斜磁场均匀段,横截面上的高速区位于平行磁场方向的哈特曼层和平行层交叉位置,压力梯度随磁场倾角的增大先增大后减小.倾斜磁场递减段,在三维磁流体动力学效应作用下,横截面上的高速射流位置向垂直磁场方向偏移.磁场递减段的三维磁流体动力学压降随磁场倾角的增大而增大.随磁场倾斜,截面上的射流峰值逐渐减小,二次流增强,引发层流向湍流的转捩.

     

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出版历程
  • 收稿日期:  2018-08-18
  • 刊出日期:  2018-11-18

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