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首页> 外文期刊>International Journal of Applied Mathematics & Statistics >Effect of an Insoluble Surfactant on the Moving Contact-Line of an Immersed Sessile Oil Drop
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Effect of an Insoluble Surfactant on the Moving Contact-Line of an Immersed Sessile Oil Drop

机译：不溶性表面活性剂对浸没式无油液滴运动接触线的影响

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摘要

In this paper, the effect of an insoluble surfactant on the moving contact line of a sessile oil drop surrounded by another liquid is studied. The model involves parameters such as the density and viscosity of the fluids, the gravity, and the property of the surface which is characterized by so called the slip coefficient. The front-tracking method is used to solve numerically the free boundary motion of the interface. To maintain the conservation of mass during the numerical procedure, a weighted factor with a certain condition is introduced to calculate the update surfactant concentration, for each iteration. Results show that the surfactant affects the drop to accelerate its detachment from the solid substrate, and the slip coefficient tums out to be the crucial factor for the magnitude of the contact line movement.
机译：在本文中，研究了不溶性表面活性剂对被另一种液体包围的无柄油滴的移动接触线的影响。该模型涉及参数，例如流体的密度和粘度，重力以及以滑移系数为特征的表面特性。前跟踪方法用于数值求解界面的自由边界运动。为了在数值过程中保持质量守恒，引入具有一定条件的加权因子以计算每次迭代的更新表面活性剂浓度。结果表明，表面活性剂影响液滴以加速其从固体基材上的分离，而滑移系数表明是接触线移动幅度的关键因素。

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