A conservative level set method for contact line dynamics

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• 作者：Sara Zahedi ; Katarina Gustavsson ; Gunilla Kreiss
• 关键词：Contact line ; Contact angles ; Level set method ; Conservative method ; Two-phase flow
• 刊名：Journal of Computational Physics
• 出版年：2009
• 出版时间：20 September 2009
• 年：2009
• 卷：228
• 期：17
• 页码：6361-6375
• 全文大小：917 K

文摘

A new model for simulating contact line dynamics is proposed. We apply the idea of driving contact-line movement by enforcing the equilibrium contact angle at the boundary, to the conservative level set method for incompressible two-phase flow [E. Olsson, G. Kreiss, A conservative level set method for two phase flow, J. Comput. Phys. 210 (2005) 225–246]. A modified reinitialization procedure provides a diffusive mechanism for contact-line movement, and results in a smooth transition of the interface near the contact line without explicit reconstruction of the interface. We are able to capture contact-line movement without loosing the conservation. Numerical simulations of capillary dominated flows in two space dimensions demonstrate that the model is able to capture contact line dynamics qualitatively correct.