LAUSR

In this paper, a lattice Boltzmann model based on the phase-field Cahn–Hilliard-based approach is proposed to deal with ternary fluid flows in the axisymmetric coordinate system. The present model can handle both high density and viscosity ratios for partial and total spreading scenarios. A variety of numerical tests, including a static droplet test, a breakup of a liquid thread test, a spreading of a liquid lens test, and a droplet collision test, were performed to verify the model. It is found that the proposed model produces accurate results which agree well with the available data.