Simulation of Gas Flow in a Microchannel by Lattice Boltzmann Method

摘要：

In recent years, microflow has become a popular field of interest due to the appearance of microelectromechanical systems (mems). Generally, the navier-stokes equations cannot adequately describe gas flows in the transition and free-molecular regimes, to these regimes, the boltzmann equation of kinetic theory is applied to govern the flows. However, this equation cannot be solved easily, either by analytical techniques or by numerical methods, to this work, the lattice boltzmann method is applied to simulate the two-dimensional isothermal pressure driven microchannel flow. This method is regarded as a numerical approach for solving the boltzmann equation in discrete velocity. We have been applied for rarefied shear-driven and pressure driven flows between parallel plates at knudsen numbers between 0.01 and 1.0.Our numerical results correspond well with those obtained analytically and experimentally. From this study, we may conclude that the lattice boltzmann method is an efficient approach for simulation of microflows.

关键词： Lattice Boltzmann method knudsen numberknudsen layer

作者: In-Won Park Myung-Seob Shin Sung-Joon Byun Joon-Yong Yoon

作者单位: Department of Mechanical Engineering, Hanyang University, Seoul, Korea Division of Mechanical and Management Engineering, Hanyang University, 1271 Sa-3-dong, Sangnok-gu, A

会议类型: 国际会议

会议名称: The Fourth International Symposium on Fluid Machinery and Fluid Engineering(第四届流体机械与流体工程国际会议)

会议地点: 北京

会议语种:英文

页码: 195-200

在线出版日期: 2008-11-25（万方平台首次上网日期，不代表论文的发表时间）