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Mathematical Problems in Engineering
Volume 2016, Article ID 4126123, 8 pages
http://dx.doi.org/10.1155/2016/4126123
Research Article

Large-Scale Computations of Flow around Two Cylinders by a Domain Decomposition Method

1School of Engineering, Sun Yat-sen University, Guangzhou 510275, China
2Department of Mathematical and Physical Sciences, Japan Women’s University, Tokyo 112-8681, Japan

Received 25 September 2015; Revised 31 December 2015; Accepted 28 February 2016

Academic Editor: Uchechukwu E. Vincent

Copyright © 2016 Hongkun Zhu et al. 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

A parallel computation is applied to study the flow past a pair of cylinders in tandem at Reynolds numbers of 1000 by Domain Decomposition Method. The computations were carried out for different sets of arrangements at large scale. The modeling by domain decomposition was validated by comparing available well-recognized results. Two cylinders with different diameters were further investigated; for different diameter ratios, the wake width ratio and some properties of the critical space ratio that dominates the flow regime were discovered. This result has important implications on future industrial application efforts as well as codes and standards related to the two-cylinder structure.