Influence of free surface curvature of a liquid layer on the critical Marangoni convection
Influence of free surface curvature of a liquid layer on the critical Marangoni convection
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DOI：
10.1016/j.ijheatmasstransfer.2008.03.025
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发表时间：
2008-10
影响因子：
5.2
通讯作者：
Z. Tang;K. Li;W. Hu
中科院分区：
文献类型：
--
作者：
Z. Tang;K. Li;W. Hu
建议采用皮尔逊不稳定性来讨论微重力环境下垂直于自由表面的施加温差下大普朗特数液层中马兰戈尼对流的开始。在这种情况下，弯曲自由表面上的温度分布是不均匀的，并且引起热毛细管对流并与马兰戈尼对流耦合。本文通过二维模型数值研究了零重力条件下液层体积比对临界马兰戈尼对流的影响以及相应的对流结构的空间变化。
The Pearson instability was suggested to discuss the onset of Marangoni convection in a liquid layer of large Prandtl number under an applied temperature difference perpendicular to the free surface in the microgravity environment. In this case, the temperature distribution on the curved free surface is non-uniform, and the thermocapillary convection is induced and coupled with the Marangoni convection. In the present paper the effect of volume ratio of the liquid layer on the critical Marangoni convection and the corresponding spatial variation of the convection structure in zero-gravity condition were numerically investigated by two-dimensional model.