Numerical simulation of forced convection driven by high-frequency traveling magnetic field for low conductivity liquids

doi:10.7523/j.ucas.2021.0029

Abstract

Abstract: High frequency traveling magnetic field generated by two sets of coil can be applied as a new driving method for low conductivity liquid, therefore study on its mechanism is of great significance. In this paper, a numerical model is established to study the effects of current, frequency, phase difference， and coil distance on the flow field and temperature field of the low conductivity liquid being driven, so as to obtain the optimal electrical parameters configuration and coil structure for the driving task. The simulation results show that the average velocity and temperature of the fluid are linearly correlated with the magnitude and frequency of the current. The average velocity is maximized when the phase difference between the coils is near 90o. Depend on the coil distance, the flow field is either two vortices or a single large circulation. Particle image velocimetry (PIV) is also used to measure the flow field distribution of NaCl solution driven by high frequency traveling magnetic field, which verifies the feasibility and effectiveness of the driving method.

Key words: flow, forced convection, electromagnetic stirring, numerical simulation, high-frequency magnetic field

CLC Number:

O361.3

GUO Shengrong, NA Xianzhao, LIU Runcong, LI Yong, ZHANG Xiangping, DONG Haifeng, DAI Xiaotian, GONG Xiufang, WANG Xiaodong. Numerical simulation of forced convection driven by high-frequency traveling magnetic field for low conductivity liquids[J]. Journal of University of Chinese Academy of Sciences, 2023, 40(1): 21-28.

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