Abstract
We present a modification method of Lattice Boltzmann Method (LBM), which is named Multi-Components Expansion Method, which enables to simulate multi-components fluid with energy reservation. In process of multi-components interaction, this modification method is able to maintain density reservation of each components as well as total momentum and energy reservation of a system. An advantage of this method is a flexible application to most LBM models. There shows an example of Rayleigh-Tayler instability problem under gravity by binary-components LBM model based on single component LBM model and Multi-Components Expansion Method.
