Laminar Flow Past a Circular Cylinder: Reduction of Drag and Fluctuating Lift Using Upstream and Downstream Rods

Abstract:

Laminar flow past a circular cylinder has been studied numerically at low Reynolds number. The upstream and downstream rods have been used as passive control in order to reduce hydrodynamics forces acting on the cylinder. Both the upstream and downstream rods significantly contribute in reduction of drag and fluctuating lift compared to single cylinder without the rods. More detail, the upstream installation rod is more dominant in drag reduction than the downstream one. On the contrary, the downstream rod has suppressed the magnitude of the fluctuating lift almost twice that of the upstream configuration. Placing the two rods together as the upstream and downstream passive control in tandem arrangement has given more hydrodynamics forces reduction than the single rod configurations.Keywords:circular cylinder, passive control, tandem, drag, lift.

• Periodical: Applied Mechanics and Materials (Volume 493)
• Pages: 9-14
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.493.9
• Online since: January 2014
• Authors: Dedy Zulhidayat Noor, Eddy Widiyono, Suhariyanto Suhariyanto, Lisa Rusdiyana, Joko Sarsetiyanto
• Keywords: Circular Cylinder, Drag, Lift, Passive Control, Tandem

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