Wake modifications in confined flows due to the presence of a downstream cylinder in staggered arrangement

• Published in: International Journal of Engineering and Technology(UAE)
• Main Author: Hamid A.H.A.; Jamaludin M.H.; Noh M.H.; Sapardi M.A.M.
• Format: Article
• Language: English
• Published: Science Publishing Corporation Inc 2018
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85058376018&doi=10.14419%2fijet.v7i4.27.22500&partnerID=40&md5=1d578b52ff13b411b9e3c234d1afabc7

In the present study, confined flows around two square cylinders in staggered arrangement were numerically investigated. Cross-flow and streamwise center-to-center spacings of one- and three-cylinder diameters, respectively, were considered. Simulations were carried out at Reynolds numbers Re = 50,100,150 and 180, where the resulting wakes are laminar and periodic. Results indicate that the presence of the downstream cylinder tends to reduce the Strouhal number, amplitude and the time-averaged lift coefficient of the upstream cylinder relative to the single cylinder cases. Furthermore, the time variations of upstream cylinder's lift coefficient behave similar to that of a single cylinder. © 2018 Authors.