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Equilibrium distribution boundary condition in lattice Boltzmann model and numerical simulation of Darcy-Forcheimer drag for fluid flow across a square cylinder array

Feng Shi-De Zhong Lin-Hao Gao Shou-Ting Dong Ping

Equilibrium distribution boundary condition in lattice Boltzmann model and numerical simulation of Darcy-Forcheimer drag for fluid flow across a square cylinder array

Feng Shi-De, Zhong Lin-Hao, Gao Shou-Ting, Dong Ping
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  • Abstract views:  4190
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  • Cited By: 0
Publishing process
  • Received Date:  26 September 2005
  • Accepted Date:  29 May 2006
  • Published Online:  11 July 2007

Equilibrium distribution boundary condition in lattice Boltzmann model and numerical simulation of Darcy-Forcheimer drag for fluid flow across a square cylinder array

  • 1. (1)Faculty of Science and Engineering,University of Dundee,DD1 4HN,UK; (2)中国科学院大气物理研究所云降水物理和强风暴实验室和大气科学和地球流体学数值模拟国家重点实验室,北京 100029

Abstract: This article presents a boundary condition for the equilibrium distribution suitable for a variety of non-slip flow Llattice Boltzmann simulations. The boundary condition is based on the Bounce-back method and satisfies mass and momentum conservation principles.The computational results show that the new boundary condition for the equilibrium distribution overcame the erroneous slip velocities resulted from the conventional bounce-back method. The porous flow field around prism-shaped particles which is governed by Darcy-Forcheimer formula is calculated and compared with Lee and Yang's (1997) the predictions are found to be sufficiently reliable.

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