Vortex shedding from two circular cylinders of equal diameter in a staggered configuration was studied experimentally in the subcritical Reynolds number regime, for Re = 3.2×104–7.4×104. The dimensionless centre-to-centre pitch ratio of the staggered cylinders was ranged from P/D = 1.125–4.0, and the incidence angle was varied in small increments from α = 0°–90°. The behaviour of the Strouhal number measurements was broadly classified according to whether the cylinders were closely, moderately, or widely spaced, corresponding to P/D < 1.5, 1.5 ≤ P/D ≤ 2.5, and P/D > 2.5, respectively. For closely spaced staggered configurations, the flow around the cylinders is similar to a single bluff body, and only a single Strouhal number is measured. For moderately spaced cylinders, two distinct Strouhal numbers are measured when α > 30°, but there is considerable scatter in the Strouhal data when α < 30°. For widely spaced cylinders, the Strouhal numbers remain close to that of a single circular cylinder, in contrast to the behaviour of the aerodynamic forces. Evidence of the outer lift peak is seen in the power spectra for the downstream cylinder.
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ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference
July 6–10, 2003
Honolulu, Hawaii, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-3697-5
PROCEEDINGS PAPER
Vortex Shedding From Two Circular Cylinders in a Staggered Arrangement Available to Purchase
D. Sumner,
D. Sumner
University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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M. D. Richards
M. D. Richards
University of Saskatchewan, Saskatoon, Saskatchewan, Canada
Search for other works by this author on:
D. Sumner
University of Saskatchewan, Saskatoon, Saskatchewan, Canada
M. D. Richards
University of Saskatchewan, Saskatoon, Saskatchewan, Canada
Paper No:
FEDSM2003-45519, pp. 199-204; 6 pages
Published Online:
February 4, 2009
Citation
Sumner, D, & Richards, MD. "Vortex Shedding From Two Circular Cylinders in a Staggered Arrangement." Proceedings of the ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. Volume 2: Symposia, Parts A, B, and C. Honolulu, Hawaii, USA. July 6–10, 2003. pp. 199-204. ASME. https://doi.org/10.1115/FEDSM2003-45519
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