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Effect of Horizontal Vibrations on Thermo-Solutocapillary Convection and Free Surface of Liquid Bridge
Microgravity Science and Technology ( IF 1.8 ) Pub Date : 2020-06-27 , DOI: 10.1007/s12217-020-09809-9
Ruquan Liang , Shuang Zhao , Jungeng Fan , Shuo Zhang

In this study, effect of lateral vibrations on the thermo-solutocapillary convection and surface behavior in a liquid bridge of toluene/n-hexane solution has been studied numerically under microgravity. The Navier-Stokes equations coupled with the concentration diffusion equation are solved on a staggered grid, and the level set approach is used to capture the deformation of free surface. Present results indicate the interface deformation is convex below the midheight of the liquid bridge and relatively complex at the upper height of the liquid bridge under different frequency vibrations. The lateral vibrations restrain radial and axial velocities on the surface under lateral vibrations with frequencies of 5 Hz and 10 Hz. While the radial and axial velocities on the surface increase under the lateral vibration with frequency of 15 Hz, which illustrates that the effect of lateral vibrations on the free surface has uncertainty.



中文翻译:

水平振动对液桥热溶质对流和自由表面的影响

在这项研究中,已在微重力下数值研究了横向振动对甲苯/正己烷溶液液桥中热-溶剂毛细管对流和表面行为的影响。将Navier-Stokes方程与浓度扩散方程耦合在交错网格上求解,并使用水平集方法捕获自由表面的变形。目前的结果表明,在不同频率的振动作用下,界面变形在液桥的中部高度以下凸出,而在液桥的上部高度处相对复杂。横向振动在频率为5 Hz和10 Hz的横向振动下限制了表面上的径向和轴向速度。在频率为15 Hz的横向振动下,表面的径向和轴向速度会增加,

更新日期:2020-06-28
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