Flow Characteristics and Fluid Forces Reduction of Flow Past Two Tandem Cylinders in Presence of Attached Splitter Plate

Author:

Ahmed Ali1ORCID,Wahid Abdul2,Manzoor Raheela3,Nadeem Noreen3,Ullah Naqib4,Kalsoom Shazia3

Affiliation:

1. Department of Mathematics, COMSATS University Islamabad, Park Road, Tarlai Kalan 45550, Islamabad, Pakistan

2. Balochistan University of Information Technology Engineering and Management Science, Quetta, Balochistan, Pakistan

3. Department of Mathematics, Sardar Bahadur Khan Women University, Quetta, Balochistan, Pakistan

4. University of Central Punjab Islamabad Campus, Islamabad, Pakistan

Abstract

Numerical simulations are carried out to study the flow around two tandem square cylinders (SC) under the effect of spacing ratio(g/D) and splitter plate length (l/D) for a fixed Reynolds number (Re) = 100. The g/D is varied from 0 to 10 and l/D is varied from 0.5 to 10. The splitter plate length is found to have strong effect on vortex shedding and fluid forces. The maximum reduction in mean drag coefficient is observed at l/D = 8, that is 15% and 78% for upstream and downstream cylinders, respectively. The maximum reduction in root-mean-square value of lift coefficient is found at l/D = 10, that is 99%. The flow pattern at both of these points is steady flow. There is 100% vortex shedding suppression for l/D > 5. The observed flow patterns for flow past tandem cylinders without splitter plate are; single bluff body (SBB), steady flow (SF), quasi-steady flow (QSF), fully developed flow (FDF) and fully developed two-row vortex street flow (FDTRVS) regimes. SBB, QSF and SF regimes were observed in presence of splitter plate.

Publisher

Hindawi Limited

Subject

General Engineering,General Mathematics

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