The Single Component Thermal Lattice Boltzmann Simulation of Pool Boiling in Two Dimensions

Abstract

In this paper, we propose a lattice Boltzmann model for simulation of two-phase flows pertinent to thermal nonideal fluids in two dimensions. This LBM has a modified pseudo-potential so that it recovers a full set of hydrodynamic equations for two-phase flows through the Chapman-Enskog expansion procedure. Numerical measurements of thermal conductivity and of surface tension agree well with theoretical predictions. Simulations of bubble rising and of pool boiling with heat transfer are carried out. They demonstrate that the model is applicable to two-phase flows with thermal effects. Using finite difference Lattice Boltzmann method ensures numerical stability of the scheme.

Keywords

• lattice boltzmann method
• two-phase flows
• computational fluid dynamics
• heat transfer
• pool boiling
• van der waals-cahn-hilliard free energy