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首页> 外文期刊>Modern Physics Letters, B. Condensed Matter Physics, Statistical Physics, Applied Physics >The asymptotic solution for the particle growth in the undercooled melt driven by a straining flow
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The asymptotic solution for the particle growth in the undercooled melt driven by a straining flow

机译：通过拉力流动驱动的过冷熔体中颗粒生长的渐近溶液

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摘要

The moving boundary problem of particle growth in the convective undercooled melt driven by a straining flow is studied by means of the multiple variable expansion method. The resulting uniformly valid asymptotic solution shows the growth behavior of a spherical particle in the straining flow. The straining flow enhances the energy transfer rate and results in higher local growth velocity of the particle near the interface where the flow is incoming, whereas near the interface where the flow is outgoing, the straining flow decreases the energy transfer rate and results in lower local growth velocity of the particle. Because of the difference in local interface growth velocities of the particle, the interface of the particle opposite to the incoming straining flow protrudes outward more significantly than that facing the outgoing straining flow, an initially spherical particle in the undercooled melt with the straining flow evolves to be gravely distorted into different shapes.
机译：通过多种可变膨胀法研究了由带状流动驱动的对流过冷熔体中的颗粒生长的移动边界问题。 得到的均匀有效的渐近溶液显示了抗旱流中的球形颗粒的生长行为。 应变流程增强了能量传递速率，并导致界面附近的颗粒的局部生长速度较高，而在流出流出的界面附近，应变流降低能量转移率并导致较低局部的结果 颗粒的生长速度。 由于颗粒的局部界面生长速度的差异，与进入的拉伸流量相反的颗粒的界面比面对输出突出流动的更显显着地向外突出，较初始球形颗粒随着排斥流向的初始球形颗粒演变为 严重扭曲成不同的形状。

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