Thermosolutocapillary Convection in an Open Rectangular Cavity With Dynamic Free Surface
Thermosolutocapillary Convection in an Open Rectangular Cavity With Dynamic Free Surface
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DOI：
10.1115/1.4029270
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发表时间：
2015-08
影响因子：
--
通讯作者：
Xiaoming Zhou;X. Huai
中科院分区：
文献类型：
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作者：
Xiaoming Zhou;X. Huai
在不考虑重力影响的情况下，对具有动态自由表面的矩形空腔内的热溶质-毛细对流进行了数值研究。温度梯度和溶质浓度梯度均水平施加。自由表面变形由水平集方法捕获。考虑了热与溶质Marangoni数之比R-sigma < -1和R-sigma = -1的两种情况。当R-sigma <-1时，自由表面在靠近左壁处向外凸出，在靠近右壁处向内凸出;随着Marangoni数的增加，自由表面变形减小，随着毛细管数和长径比的增加，自由表面变形增大。当R-sigma =-1时，自由表面在左右壁附近向外凸出，在中心区域向内凸出;随着Marangoni数的增加，自由表面变形模式发生变化，随着毛细管数和长径比的增加，自由表面变形增大。
Thermosolutocapillary convection within a rectangular cavity with dynamic free surface is numerically investigated in the absence of gravitational effects. Both the temperature and solute concentration gradients are applied horizontally. The free surface deformation is captured by the level set method. Two cases of the ratio of thermal to solutal Marangoni number R-sigma < -1 and R-sigma = -1 are considered. For R-sigma < -1, the free surface bulges out near the left wall and bulges in near the right wall; with the increase of Marangoni number, the free surface deformation decreases and with the increase of capillary number and aspect ratio, it increases. For R-sigma = -1, the free surface bulges out near the left and right walls and bulges in at the central zone; with the increase of Marangoni number, the free surface deformation mode is changed and with the increase of capillary number and aspect ratio, the free surface deformation increases.