中国液态锂铅实验回路DRAGON-Ⅳ磁流体动力学直管实验段数值分析  

Numerical Analysis of Magnetohydrodynamic Flow in Rectangular Duct of Chinese Liquid Metal LiPb Experiment Loop DRAGON-Ⅳ

作　　者：杨志义[1,2] 周涛[1,2] 陈红丽[2] 吴宜灿[1] 

机构地区：[1]中国科学院等离子体物理研究所,安徽合肥230031 [2]中国科学技术大学核科学技术学院,安徽合肥230027

出　　处：《核动力工程》2010年第S1期77-82,共6页Nuclear Power Engineering

基　　金：国家自然科学基金项目(10875145);ITER计划专项(国内配套研究)(2009GB104005)

摘　　要：基于液态锂铅实验回路DRAGON-Ⅳ即将开展的磁流体动力学(MHD)实验是分析聚变堆包层中液态金属在强磁场环境下流动特性的重要途径,实验段物理量的准确模拟能够为实验段的设计优化以及速度、压力等的测量方式提供参考和依据,保证实验的顺利完成。本文采用一种电流守恒格式及相容的Projection方法模拟高哈特曼数(Ha)下的MHD流动,在对算法进行校验的基础上,对上述实验段在梯度磁场以及均匀磁场下的磁流体动力学效应进行了数值分析,探讨了感应电流产生的洛伦兹力对速度场、压力场的影响。The Magnetohydrodynamic (MHD) experiment,which will be carried out in Chinese liquid metal LiPb experimental loop DRAGON-Ⅳ,is an important approach to study the flow characteristics under the high magnetic field of the magnetic confinement fusion reactors. An accurate numerical analysis is neces-sary not only for the design and optimization of MHD experiment loop,but also for the measurement of pres-sure and velocity. In this paper,a conservative scheme and consistent projection method were adopted to simulate the MHD flow at high Hartmann numbers. The code developed by the FDS Team was used to ana-lyze the MHD effect of LiPb MHD loop under fringing and uniform magnetic fields. The current density dis-tribution was shown to illustrate the effect of Lorentz force on the velocity and pressure fields.

关 键 词：液态金属包层 液态锂铅回路 磁流体动力学 计算流体力学 

分 类 号：O361.3[理学—流体力学]