TY - JOUR
T1 - Wetting Boundary Condition in an Improved Lattice Boltzmann Method for Nonideal Gases
AU - Qin Lou, Mo Yang & Hongtao Xu
JO - Communications in Computational Physics
VL - 4
SP - 1116
EP - 1130
PY - 2018
DA - 2018/08
SN - 23
DO - http://doi.org/10.4208/cicp.OA-2016-0211
UR - https://global-sci.org/intro/article_detail/cicp/12629.html
KW - Interface-capturing lattice Boltzmann equation model, wetting boundary condition, surface interactions.
AB - <p style="text-align: justify;">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.</p>