Abstract:The vortex dynamics of tandem bare and spiral finned cylinders in the cross flow are experimentally investigated at a spacing ratio of [Formula: see text]. Three different fin pitch-to-root diameter ratios ([Formula: see text]) are considered. For high [Formula: see text], the fins on the downstream cylinder inhibit the shear layer growth and flapping in the cylinders' gap. Shear layer flapping is only observed for finned cylinders with the lowest [Formula: see text]. Moreover, the gap shear layers enclose the… Show more
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