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Chinese Physics, 2004, Vol. 13(4): 434-440    DOI: 10.1088/1009-1963/13/4/003
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Numerical analysis of fluid flow through a cylinder array using a lattice Boltzmann model

Dong Ping (董平)a, Feng Shi-De (冯士德)ab, Zhao Ying (赵颖)b
a Division of Civil Engineering, Faculty of Engineering and Physical Sciences, University of Dundee, DD1 4HN, United Kingdom; b State Key Laboratory of Numerical Modelling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, P. O. Box 9804, Beijing 100029, China;
Abstract  In this paper we present a detailed computational study of an incompressible Newtonian fluid flow across a periodic array of two-dimensional cylinders which is a simplest non-trivial representation of a porous media. A two-dimensional Lattice Boltzmann Method is used to solve the governing Navier-Stokes equation taking into account of viscous dissipation effects and influence of nonlinear fluid drag. Both the flow fields and the Darcy-Forchheimer drag coefficient as a function of the solid volume fraction are calculated for a wide range of flow Reynolds numbers. The predictions were compared with the results from conventional numerical and empirical models for verification. Apart from confirming that inertial effects can cause a significant deviation from Darcy's law for large velocities the results also show that the characteristics of the vorticity field vary considerably as the Reynolds number increases, which will have major implications to the transport of passive particulate substances within the pores and their removal rate.
Keywords:  Darcy-Forchheimer drag      porous media      Reynolds number      lattice Boltzmann method  
Received:  24 June 2003      Revised:  09 August 2003      Accepted manuscript online: 
PACS:  47.56.+r (Flows through porous media)  
  47.27.-i (Turbulent flows)  
Fund: Project supported by the UK Engineering and Physical Sciences Research Council (EPSRC) through a research grant (Grant No GR/R72532/01) and by the Chinese Science Foundation through a grant (Grant No ZKCX2-SW-210, 8-1502).

Cite this article: 

Dong Ping (董平), Feng Shi-De (冯士德), Zhao Ying (赵颖) Numerical analysis of fluid flow through a cylinder array using a lattice Boltzmann model 2004 Chinese Physics 13 434

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