Lattice Bhatnagar-Gross-Krook Simulations of Turbulent Natural Convection in a Cavity

• 来源期刊: 中国物理快报（英文版）
• 学科: 物理学
• 年，卷（期）: 2002,（4）
• 页码范围: 515-517
• 页数: 3页
• 分类号: O4
• 语种: 英文

摘要

A thermal lattice Bhatnagar-Gross-Krook (LBGK) model with a robust boundary scheme is developed for Boussinesq incompressible fluids. In the model the velocity and temperature fields are solved by two independent LBGK equations which are combined into a coupled equation for the whole system. The two-dimensional natural convection flow of air in a differentially heated cavity of an aspect ratio of four is simulated for the Rayleigh number up to 1010. The numerical results are found to be in good agreement with those of previous studies.