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Journal of Applied Mathematics
Volume 2012 (2012), Article ID 465972, 14 pages
http://dx.doi.org/10.1155/2012/465972
Research Article

Direct Simulation of Low-Re Flow around a Square Cylinder by Numerical Manifold Method for Navier-Stokes Equations

School of Materials and Energy, Guangdong University of Technology, Guangzhou 510643, China

Received 15 January 2012; Accepted 3 August 2012

Academic Editor: Fu-Yun Zhao

Copyright © 2012 Zhengrong Zhang and Xiangwei Zhang. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Numerical manifold method was applied to directly solve Navier-Stokes (N-S) equations for incompressible viscous flow in this paper, and numerical manifold schemes for N-S equations coupled velocity and pressure were derived based on Galerkin weighted residuals method as well. Mixed cover with linear polynomial function for velocity and constant function for pressure was employed in finite element cover system. As an application, mixed cover 4-node rectangular manifold element has been used to simulate the incompressible viscous flow around a square cylinder in a channel. Numerical tests illustrate that NMM is an effective and high-order accurate numerical method for incompressible viscous flow N-S equations.