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Global linear stability analysis of thermo-solutal Marangoni convection with the opposing forces under microgravity conditions

机译：在微匍匐条件下与相反的力量热 - 萨洛猴对流的全局线性稳定性分析

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The Marangoni flow is driven by surface tension gradients along the liquid-gas interface due to temperature and/or concentration gradient and leads to undesirable growth striations in the grown crystals of the alloys of silicon (Si) and germanium (Ge) in the floating zone method. The previous numerical studies and linear stability analysis (LSA) have been shown a series of transitions of flow states for low Prandtl number fluids as thermal Marangoni number increases: an axisymmetric steady flow becomes a three-dimensional non-axisymmetric flow; and then becomes an oscillatory flow. The previous study only focuses on thermal Marangoni flow. Solutal one also has significant contributions to the flow pattern, However, the theoretical onset of the thermal-solutal Marangoni convection has not been yet determined. Here, the present study performs three-dimensional global LSA to reveal the onset of thermal and solutal Marangoni convection with the opposing forces in a cylindrical liquid bridge.
机译：Marangoni流动由沿液体 - 气体界面引起的液体气体界面引起的，由于温度和/或浓度梯度，并导致浮动区中硅（Si）和锗（Ge）的种植晶体中的不希望的生长条件方法。以前的数值研究和线性稳定性分析（LSA）已被示出为低PRANDTL数流体的一系列流动状态，因为热玛龙龙数增加：轴对称稳定流动变为三维非轴对称流量;然后成为振荡流动。以前的研究仅重点关注热玛龙龙流量。 Solutal One也对流动模式具有显着的贡献，然而，尚未确定热 - 萨洛猴对流的理论发作。这里，本研究执行三维全局LSA，以揭示与圆柱形液体桥中的相对力的热和帕卢隆对流的发作。

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