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Commun. Comput. Phys., 23 (2018), pp. 1116-1130.
Published online: 2018-08
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A numerical scheme capable of modeling fluid behavior on wetting surfaces is developed based on an interface-capturing lattice Boltzmann equation model [Q. Lou and Z. Guo, Phys. Rev. E 91, 013302 (2015)], which has not yet been applied to wetting problems. With the proposed numerical scheme, the spurious densities near the solid surfaces can be eliminated and a wide range of equilibrium contact angles can also be reproduced. Further, the equilibrium contact angle on the solid surface, as a simulation parameter, can be given in advance according to the wettability. Numerical tests, including the dynamics behavior of a liquid drop spreading on a smooth surface and the capillary intrusion, demonstrate that the proposed numerical scheme performs well and can eliminate the spurious densities near the solid surface.
}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.OA-2016-0211}, url = {http://global-sci.org/intro/article_detail/cicp/12629.html} }A numerical scheme capable of modeling fluid behavior on wetting surfaces is developed based on an interface-capturing lattice Boltzmann equation model [Q. Lou and Z. Guo, Phys. Rev. E 91, 013302 (2015)], which has not yet been applied to wetting problems. With the proposed numerical scheme, the spurious densities near the solid surfaces can be eliminated and a wide range of equilibrium contact angles can also be reproduced. Further, the equilibrium contact angle on the solid surface, as a simulation parameter, can be given in advance according to the wettability. Numerical tests, including the dynamics behavior of a liquid drop spreading on a smooth surface and the capillary intrusion, demonstrate that the proposed numerical scheme performs well and can eliminate the spurious densities near the solid surface.