Aerodynamic Simulation of Low Mach Turbulent Jets with Lattice Boltzmann Models

• 作者: Junlong Xie Keqi Wu Shishuai Shishuai Zhang Yunchong Tu
• 来源期刊: 流体动力学(英文)
• 学科: 数学
• 关键词: LATTICE BOLTZMANN MODEL LAGRANGE Density Aerodynamic Performance Guo MODEL
• 年，卷（期）: 2012,（4）
• 页码范围: 264-270
• 页数: 7页
• 分类号: O1

摘要

The lattice Boltzmann method (LBM) is a numerical simplification of the Boltzmann equation of the kinetic theory of gases that describes fluid motions by tracking the evolution of the particle velocity distribution function based on linear streaming with nonlinear collision. To verify the reliability and accuracy of the model simulation of incompressible fluid flow, we program to simulate two-dimensional Poiseuille flow which has the analytical solution by using the three mode: D2Q9 model, He-Luo model, Guo model (D2G9). The tests show that the Guo model gives better results. So, in the article, the Guo model is used to stimulate the jet flow field, then the result of which is compared to the result from the experience. The research of this article is the first step to make use of the LBM on the aeroacoutics of jet flow and to provide a theoretical basis on jet aeroacoustics for further study.