Abstract
This paper describes the effect of spacing between two adjoining circular cylinders on flow around two-dimensional circular cylinders. The experiment was carried out in an N. P. L. blow-down type wind-tunnel with a working section of 500 mm×500 mm×2000 mm, and between the Reynolds numbers of 6.3×103 and 1.9×104. The surface-pressure distributions on the circular cylinder were measured and the drag coefficient was determined from these measurements. The flow pattern around circular cylinders was observed. The power spectrum in the turbulent wake behind circular cylinders was also measured. It was found that shedding vortices from circular cylinders exist in the range of S/D≥2.3.
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