A lattice Boltzmann based single-phase method for modeling surface tension and wetting

Simulation of droplet formation and coalescence using lattice Boltzmann-based single-phase model

“…The wetting properties of the solid wall are imposed by assigning a mass gradient at the wall cell. Different mass gradients will correspond to different wetting properties of the liquid/solid interface [13,35]; for instance, a zero mass gradient corresponds to a perfect wetting case, while a mass gradient of one corresponds to a totally nonwetting case. Intermediate gradients lead to partial wetting cases.…”

Modified surface tension model for free surface flow with single-phase lattice Boltzmann method

“…In order to examine the surface tension effect, Xing, et al [11] added a perturbation on the interface cells according to the color model [3] for immiscible fluids,…”

“…Körner, et al [10] extended Ginzburg, et al's model and introduced the conception of volume of fluid (VOF) into the LBM, which formed the single-phase model. Xing, et al [11] added a perturbation on the surface to accommodate the surface tension effect, which seems to be inaccurate and complicated for direct manipulations of the distribution function. Furthermore, this algorithm restricts the choice of fluid viscosity, because the relaxation factor should be smaller than 1.…”

Lattice Boltzmann method for dynamic wetting problems

“…1b) is the introduction of an additional interaction force between wall and liquid responsible for surface wettability [11][12][13][14][15][16][17][18][19][20][21]. The extra force is acting in all cells of the interface between wall and liquid (shown in Fig.…”

“…Several numerical methods are available for simulation flows with moving interfaces. The most famous of them are the volume of fluid (VOF) [5][6][7][8][9][10] and the lattice Boltzmann method [11][12][13][14][15][16][17][18][19][20][21]. Numerical modeling of contact line motion is difficult because of the widely differing length-scales involved in the problem.…”