Coalescence of two colliding liquid droplets with lattice Boltzmann method

In this talk, we present two-dimensional numerical simulations of the head-on and off-center binary collision of van der Waals liquid droplets using the lattice Boltzmann method (LBM). The effects of the Weber number, impact velocity, droplet size ratio on the coalescence process are investigated. Numerical results are found in a good agreement with experimental findings.\\[4pt] [1] Y.H. Qian, D. d'Humieres, and P. Lallemand, Europhys. Lett. 17, 479 (1992).\\[0pt] [2] X.W. Shan and H.D. Chen, Lattice Boltzmann model for simulating flows with multiple phases and components, Physical Review E 47 (3) (1993) 1815--1819.\\[0pt] [3] M.R. Swift, W.R. Osborn, and J.M. Yeomans, Lattice Boltzmann simulation of nonideal fluids, Physical Review Letters 75 (5) (1995) 830--833.\\[0pt] [4] Y.K. Wei Y.H. Qian, Lattice Boltzmann Simulations for Multiphase Fluids with the Redich-Kwong Equation of State, Journal of Hydrodynamics, 2011,23(6)823-828