Surface Tension Adjustment in a Pseudo-Potential Lattice Boltzmann Model

Abstract

Pseudo-potential lattice Boltzmann models have been widely applied in many multiphase simulations. However, most of these models still suffer from some drawbacks such as spurious velocities and untunable surface tension. In this paper, we aim to discuss the surface tension of a popular pseudo-potential model proposed by Kupershtokh et al., which has attracted much attention due to its simplicity and stability. The influence of a parameter on the surface tension in the model is analyzed. Based on the analysis, we proposed a method to adjust surface tension by changing the parameter in the model. However, the density distribution and the stability of the model also depend on the parameter. To adjust the surface tension independently, the pressure tensor modifying method is introduced and numerically tested. The simulation results show that, by applying the pressure tensor modifying method, the surface tension can be adjusted with little influence on the stability and density distributions.

arXiv comment23 pages, 7 figures, 28 conferences

References in corpus (4)

• Lattice Boltzmann Simulation of Non-Ideal Fluids
• Lattice Boltzmann modeling of multiphase flows at large density ratio with an improved pseudopotential model
• Mesoscopic modeling of a two-phase flow in the presence of boundaries: the Contact Angle
• Forcing scheme in pseudopotential lattice Boltzmann model for multiphase flows

Cited by in corpus (1)

• Contact Angle Adjustment in Equation of States Based Pseudo-Potential Model