期刊
COMPUTERS & FLUIDS
卷 167, 期 -, 页码 313-323出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compfluid.2018.03.023
关键词
Gas kinetic method; MicroChannel flows; Multi-scale method
资金
- National Natural Science Foundation of China [11175052]
- China Postdoctoral Science foundation [2016M591517]
- Shenzhen Technology Project [JCYJ20160226201347750, GJHZ20160226200952216]
- Jiangsu Postdoctoral Science Foundation [1601004B]
- Youth Foundation of Nanjing Forestry University [CX2016025]
In this paper, a conserved discrete unified gas kinetic scheme (DUGKS) is developed for microchannel gas flows in all flow regimes, which has attracted much attention because of its basic research and wide engineering applications in the micro-electro-mechanical system (MEMS). In present DUGKS, distribution function and conservative variables are updated simultaneously to ensure the conservation of conservative variables. To study force-driven microchannel gas flow, the direct and the indirect discretization scheme for the force term are introduced, and their predictions in different flow regimes are further investigated. Meanwhile, to accurately realize the pressure boundary condition, a consistent linear extrapolation scheme is also presented. In this study, microchannel gas flows driven by shear stress, pressure, or external force have been investigated by present DUGKS. Numerical results, including velocity profile, non-linear pressure, and mass flow rate, agree fairly well with other benchmark in different flows regimes, which demonstrate the conserved DUGKS is a reliable method for microchannel gas flows. (C) 2018 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据