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Formation of uniformly sized metal droplets from a capillary jet by electromagnetic force

机译:通过电磁力从毛细管射流形成大小均一的金属液滴

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摘要

A new method for producing uniformly sized metal droplets is proposed. In this method, an intermittent electromagnetic pinch force is applied to a capillary jet of liquid metal to generate fluctuations of equal interval on the surface of the jet. As the fluctuations grow, the liquid metal jet breaks into small droplets whose size depends on the frequency of the intermittent electromagnetic pinch force. The breakup of the capillary jet is numerically simulated by performing multiphase fluid flow analysis with surface tracking (volume of fluid method) and electromagnetic force analysis. The simulation results agree well with the results of model experiments. The jet breaks up into uniformly sized droplets when the frequency of the intermittent force equals the frequency that corresponds to the natural disturbance wavelength of the capillary jet.
机译:提出了一种生产均一尺寸的金属液滴的新方法。在这种方法中,将间歇性的电磁收缩力施加到液态金属的毛细管射流上,以在射流的表面上产生等间隔的波动。随着波动的增加,液态金属射流会破碎成小滴,其大小取决于间歇性电磁挤压力的频率。通过使用表面跟踪(流体体积法)进行多相流体流动分析和电磁力分析,对毛细管射流的破裂进行了数值模拟。仿真结果与模型实验结果吻合良好。当间歇力的频率等于与毛细管射流的自然扰动波长相对应的频率时,射流分解为大小均一的液滴。

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