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微通道中气体流动的格子Boltzmann数值模拟
  • ISSN号：1001-246X
  • 期刊名称：《计算物理》
  • 时间：0
  • 分类：O356[理学—流体力学;理学—力学]
  • 作者机构：[1]中国计量学院计量测试工程学院,浙江杭州310018, [2]浙江大学力学系,浙江杭州310027
  • 相关基金：浙江省重大科技专项（10632070）资助项目
作者： 聂德明[1], 郭晓辉[1], 林建忠[1,2]
关键词： 微流动, 格子BOLTZMANN方法, Knudsen数, 弯道, microfluids, lattice Boltzmann method, Knudsen number, cureved channel
中文摘要：

采用可压缩格子Boltzmann模型及非平衡外推边界条件,数值模拟微通道中的气体在滑移区域（Kn≤0.1）内的流动,计算结果包括出口速度剖面、通道中心压力分布以及质量流率等,与理论结果及其他实验结果符合得很好.还模拟了180°弯曲通道中的气体流动.结果表明,滑移速度的存在抑制了边界层的分离,因此在弯曲处不存在漩涡.计算结果还表明,弯道的存在显著影响了气体的质量流率.

英文摘要：

A compressible lattice-Boltzmann model coupled with non-equilibrium extrapolation method are adopted to simulate gas flow in microchannels at slip regime （Kn≤0.1）.Numerical results,including velocity profiles at outlet,pressure distributions and mass flowrates,agree well with analytical solutions and experimental results.In addition,gas flow in a 180 degree curved channel is numerically simulated.It shows that boundary layer separation is suppressed by slip velocity at the wall.In addition,mass flowrate of a curved channel is smaller than that of a straight one.

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期刊信息
  • 《计算物理》
  • 中国科技核心期刊
  • 主管单位:中国科学技术协会
  • 主办单位:中国核学会
  • 主编：朱少平
  • 地址：北京海淀区丰豪东路2号北京应用物理与计算数学研究所
  • 邮编：100094
  • 邮箱：jswl@iapcm.ac.cn
  • 电话：010-59872547 59872545 59872547
  • 国际标准刊号：ISSN：1001-246X
  • 国内统一刊号：ISSN：11-2011/O4
  • 邮发代号:2-477
  • 获奖情况:
  • 1992年获“全优期刊”奖,《CAJ-CD规范》执行优秀奖
  • 国内外数据库收录:
  • 荷兰文摘与引文数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:4426