CORRECTIONS TO THE COLLISION TERM IN THE BGK BOLTZMANN EQUATION

• 来源期刊: 中国物理（英文版）
• 关键词: lattice Boltzmann model collision operator shock wave
• 年，卷（期）: 2001,（12）
• 页码范围: 1106-1109
• 页数: 4页
• 语种: 英文

摘要

With the discrete method of the hexagonal cell and three different velocities of particle population in each cell,a two-dimensional lattice Boltzmann model is developed in this paper.[1,2] The collision operator in the Boltzmann equation is expanded to fourth order using the Taylor expansion.[3,4] With this model, good results have been obtained from the numerical simulation of the reflection phenomenon of the shock wave on the surface of an obstacle, and the numerical stability is also good. Thus the applicability of the D2Q19 model is verified.