Open AccessWake Modifications in Confined Flows Due to the Presence of a Downstream Cylinder in Staggered Arrangement
Author(s) -
Ahmad Hussein Abdul Hamid,
Mohd H. Jamaludin,
Mohd Aderi Che Noh,
Mohd Azan Mohammed Sapardi
Publication year - 2018
Publication title -
international journal of engineering and technology
Language(s) - English
Resource type - Journals
ISSN - 2227-524X
DOI - 10.14419/ijet.v7i4.27.22500
Subject(s) - strouhal number , wake , reynolds number , lift (data mining) , laminar flow , lift coefficient , cylinder , mechanics , physics , geometry , turbulence , mathematics , computer science , data mining
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.