Wall-Adjacent Velocity Profiles of Nano-scale Gas Flows

被引：0
作者：
Haruka Yasuoka
Masayuki Kaneda
Kazuhiko Suga
机构：
[1] Osaka Prefecture University,Department of Mechanical Engineering
来源：
Journal of Statistical Physics | 2016年 / 165卷
关键词：
Gas flow; Nano-channel; Molecular dynamics; Near-wall velocity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Detailed gas velocity profiles in the vicinity of wall surfaces of nano-scale gaps are analysed by molecular dynamics simulations for argon and oxygen gas flows between diamond surfaces. Force driven flows are simulated at a temperature of 330 K and a pressure of 0.23–3.92 MPa. The flow regime is considered as in the slip-transitional flow. It is discussed why the usual binning for statistics may mislead the velocity profiles. To avoid such misleading, the volume based binning is introduced for obtaining correct velocity profiles next to the wall. It is confirmed that the corrected statistical velocity shows a flatter profile next to the wall with an inflection point followed by an increasing curve.
引用
收藏
页码：907 / 919
页数：12
相关论文
共 94 条
  • [1] Miller DR(2014)Nanoscale metal oxide-based heterojunctions for gas sensing: a review Sens. Actuators B 204 250-272
  • [2] Akbar SA(2015)Fast highly-sensitive room-temperature semiconductor gas sensor based on the nanoscale pt-tio Sens. Actuators B 207 351-361
  • [3] Morris PA(2014)-pt sandwich J. Microelectromech. Syst. 23 899-907
  • [4] Plecenik T(2011)Fabrication and characterization of a novel nanoscale thermal anemometry probe Microfluid Nanofluid 11 269-282
  • [5] Moško M(2010)Equilibrium molecular dynamics studies on nanoscale-confined fluids Appl. Phys. Lett. 96 133108-709
  • [6] Haidry A(2003)Separation of gases from gas-water mixtures using carbon nanotubes Mol. Simul. 29 697-569
  • [7] Ďurina P(2015)Molecular simulations of Knudsen wall-slip: effect of wall morphology Mol. Phys. 113 561-3092
  • [8] Truchlý M(1994)Applicability of molecular dynamics method to the pressure-driven gas flow in finite length nano-scale slit pore Phys. Rev. E 49 3079-4706
  • [9] Grančič B(2009)Hydrodynamic boundary conditions, correlation functions, and kubo relations for confined fluids Int. J. Mol. Sci. 10 4638-673
  • [10] Gregor M(2011)Molecular momentum transport at fluid-solid interfaces in mems/nems: a review Phys. Rev. E 84 016313-1352
12345678910