Flow Control of the Vortex Shedding from a Circular Cylinder by Asymmetrically Arranged Deflectors

This paper deals with the flow around a circular cylinder with an element inserted in the wake. A long splitter plate (splitter-plate case) and a circular cylinder of equal diameter (two-cylinder case) were used as the element. Experiments were mainly conducted in a water tank at a Reynolds number o...

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Veröffentlicht in:Nihon Kikai Gakkai rombunshuu. B hen 2006/03/25, Vol.72(715), pp.604-611
Hauptverfasser: ODA, Junko, OZONO, Shigehira, IWAKIRI, Hiroshi
Format: Artikel
Sprache:eng ; jpn
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Zusammenfassung:This paper deals with the flow around a circular cylinder with an element inserted in the wake. A long splitter plate (splitter-plate case) and a circular cylinder of equal diameter (two-cylinder case) were used as the element. Experiments were mainly conducted in a water tank at a Reynolds number of 7.4×103 for the two-cylinder case and 1.1×104 for the splitter-plate case. As the deflectors are horizontally traversed upstream, the base suction coefficient exhibits a critcal tall at a certain position. PIV measurements revealed suppression of regular vortex shedding at the critical positions in both cases and a similar behavior of vortex formation length in the vicinity of the positions.
ISSN:0387-5016
1884-8346
DOI:10.1299/kikaib.72.604