微通道气体流动的格子-Boltzmann法模拟  

SIMULATION OF FLUID FLOW IN MICRO-CHANNEL BY LATTICE-BOLTZMANN METHOD

作　　者：马斌[1] 雷树业[1] 郝锦志[1] 卢秋敏[1] 

机构地区：[1]清华大学热能工程系,北京100084

出　　处：《广西师范大学学报（自然科学版）》2003年第2期20-24,共5页Journal of Guangxi Normal University:Natural Science Edition

基　　金：国家自然科学基金资助项目(50176025);清华大学985基金资助项目

摘　　要：格子-Boltzmann方法的迅速发展为计算流体力学提供了一种强有力的工具.结合"贴壁层"的理论对格子-Boltzmann方程在微槽道流动中的应用进行探索,对Kn数跨越速度滑移区和过渡区的若3个微通道中的气体流体进行了模拟,给出了通道内速度、压力、局部阻力系数的变化曲线,并和同条件下用不考虑滑移的计算结果和文献给出的理论结果进行了对比,结果表明和文献给出的理论结果吻合得很好.LatticeBoltzmann method is a powerful tool for CFD (computer fluid dynamic).In this article based upon walladjacent layer theory,velocityslip domain and velocitytransition domain in microchannel of three types were taken consideraed.Simulating results on the velocity,pressure,local resistance coefficient in such conditions were presented.To compare the result with noslip condition,the theoretical result on noslip condition was also computed,and all verity our result.

关 键 词：微通道流动 气体流动 格子-Boltzmann法 计算流体力学模拟 速度 压力 局部阻力系数 

分 类 号：O354[理学—流体力学]