Journal of shanghai Jiaotong University (Science) ›› 2016, Vol. 21 ›› Issue (2): 143-150.doi: 10.1007/s12204-016-1705-4

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Numerical Simulation of Viscous Flow over a Grooved Surface by the Lattice Boltzmann Method

Numerical Simulation of Viscous Flow over a Grooved Surface by the Lattice Boltzmann Method

HUANG Qiaogao (黄桥高), PAN Guang*(潘 光)   

  1. (School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China)
  2. (School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China)
  • Online:2016-04-15 Published:2016-04-26
  • Contact: PAN Guang(潘 光) E-mail:panguang601@163.com

Abstract: The motivation of this work is to investigate a grooved surface’s drag reduction. The viscous flow through a two-dimensional microchannel with the grooved surface is analyzed by the lattice Boltzmann method (LBM). The effects of the grooved surface on the streamline patterns, the velocity distributions near wall region and the fluid shear stress distributions on the walls at different Reynolds numbers are studied. In addition, the influences of the groove’s geometrical parameters on the grooved surface’s drag reduction are discussed. The numerical results confirm the grooved surface’s drag reduction and present the drag reduction law of the grooved surface.

Key words: grooved surface| drag reduction| viscous flow| lattice Boltzmann method (LBM)| momentumexchange method

摘要: The motivation of this work is to investigate a grooved surface’s drag reduction. The viscous flow through a two-dimensional microchannel with the grooved surface is analyzed by the lattice Boltzmann method (LBM). The effects of the grooved surface on the streamline patterns, the velocity distributions near wall region and the fluid shear stress distributions on the walls at different Reynolds numbers are studied. In addition, the influences of the groove’s geometrical parameters on the grooved surface’s drag reduction are discussed. The numerical results confirm the grooved surface’s drag reduction and present the drag reduction law of the grooved surface.

关键词: grooved surface| drag reduction| viscous flow| lattice Boltzmann method (LBM)| momentumexchange method

CLC Number: