Title: Incompressible lattice Boltzmann model for porous flows with large pressure gradient

Authors: Zhaoli Guo, C.G. Zheng, B.C. Shi

Addresses: National Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, PR China. ' National Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, PR China. ' National Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, PR China

Abstract: To drive a fluid in a porous media, a large pressure drop is usually required. Under such cases, the standard lattice Boltzmann equation, which uses the equation of state of ideal gases, may fail to work due to compressibility effect. In this paper, we propose an incompressible lattice Boltzmann model for porous flows, which can overcome this difficulty. Numerical results demonstrate that the model can use a large pressure without the compressibility effect.

Keywords: porous flows; lattice Boltzmann method; LBM; incompressible fluids; large pressure gradient; modelling.

DOI: 10.1504/PCFD.2009.024823

Progress in Computational Fluid Dynamics, An International Journal, 2009 Vol.9 No.3/4/5, pp.225 - 230

Published online: 01 May 2009 *

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