Application of lattice Boltzmann model to multiphase flows with phase transition

A lattice Boltzmann model for multiphase flows is extended to simulate mult i-phase fluids flows with phase transition by taking an account of mass exc hange process in the lattice Boltzmann equation. The numerical measurements in terms of bulk properties such as volume fraction and density agree with analytical solutions of mass and volume conservation through simulations o f phase transitions with homogeneous transition rate. The simulations of ph ase transition under gravity including pool boiling and boiling flow in a v ertical pipe demonstrate qualitative applicability of the model to simulati on of complicated multi-phase fluid dynamics with phase transition. (C) 200 0 Elsevier Science B.V. hll rights reserved.