Title: Numerical analysis of confined flow past permeable square cylinder with CE/SE method

Authors: Luhe Yang; Duoxing Yang; Lianzhong Zhang; Deliang Zhang; Ziqiu Xue

Addresses: Institute of Crustal Dynamics, CEA, China ' Institute of Crustal Dynamics, CEA, China ' School of Physics, Nankai University, China ' Institute of Mechanics, CAS, No.15 Beisihuanxi Road, Beijing, 100190, China ' Research Institute of Innovative Technology for the Earth, 9-2, Kizugawadai, Kizugawa-Shi, Kyoto, 619-0292, Japan

Abstract: The unsteady flow field past a two-dimensional permeable square cylinder was predicted by an updated CE/SE method. The periodic patterns of streamline and vortex shedding were obtained. The evolution of lift and drag coefficients were analysed. Results of 2D computations were compared with the experimental data. It found that the Reynolds number dominated the magnitude and frequency of the vorticity given porosity and Darcy number. It proved that the CE/SE method was an effective tool for predicting viscous flows in porous media.

Keywords: porous media; unsteady flow; CE/SE method; computational fluid dynamics; CFD; confined flow; permeable square cylinders; streamline; vortex shedding; viscous flows.

DOI: 10.1504/PCFD.2016.078756

Progress in Computational Fluid Dynamics, An International Journal, 2016 Vol.16 No.5, pp.281 - 287

Received: 17 Oct 2014
Accepted: 14 Apr 2015

Published online: 02 Sep 2016 *

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