Numerical and experimental study of liquid metal stirring by rotating permanent magnets
Numerical and experimental study of liquid metal stirring by rotating permanent magnets
复制标题
旋转永磁体搅拌液态金属的数值与实验研究
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
E. Baake
中科院分区：
文献类型：
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作者：
V. Dzelme;A. Jakovičs;J. Vencels;D. Köppen;E. Baake
在这项工作中，我们研究了通过旋转永磁体搅拌液态镓。我们展示了通过旋转永磁体轻松创建不同流动模式的可能性，这对于控制系统中的传热和传质过程具有重要的工业意义。与将磁体旋转模拟为瞬态问题并对洛伦兹力进行时间平均的典型方法不同，我们将磁体旋转作为谐波（频域）问题来解决，这导致力等于时间平均的力，并大大减少了模拟时间。使用示踪粒子的中子射线照相可视化的定性流结构结果和超声多普勒测速的定量数据来验证数值结果。
In this work, we study liquid gallium stirring by rotating permanent magnets. We demonstrate possibility of easily creating different flow patterns by rotating permanent magnets, which can be industrially important for controlling heat and mass transfer processes in the system. Unlike the typical approach of simulating magnet rotation as a transient problem and time-averaging the Lorentz forces, we solve the magnet rotation as a harmonic (frequency domain) problem, which leads to forces equal to time-averaged ones and decreases the simulation time considerably. Numerical results are validated using qualitative flow structure results from the neutron radiography visualization of tracer particles and quantitative data from Ultrasound Doppler velocimetry.