Unsteady Flow around Two-Dimensional Circular Cylinder Row in Fluid Elastic Vibration

Unsteady Flow around Two-Dimensional Circular Cylinder Row in Fluid Elastic Vibration

We describe the unsteady flow around two-dimensional circular cylinder row supported by the leaf spring in the fluid-elastic vibration. The experiment was carried out in a circuit-type wind tunnel having a 200mm×200mm working section of 2000mm length at the Reynolds number Re of 8820. Two-dimensiona...

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Veröffentlicht in:Nihon Kikai Gakkai rombunshuu. B hen 1998/12/25, Vol.64(628), pp.4010-4015
Hauptverfasser: OKAMOTO, Shiki, TAKENAKA, Jun, KAWAMURA, Masao, YOSHIKAWA, Shinya
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Sprache:eng ; jpn
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Flow-Induced Vibration
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container_issue 628
container_start_page 4010
container_title Nihon Kikai Gakkai rombunshuu. B hen
container_volume 64
creator OKAMOTO, Shiki
TAKENAKA, Jun
KAWAMURA, Masao
YOSHIKAWA, Shinya
description We describe the unsteady flow around two-dimensional circular cylinder row supported by the leaf spring in the fluid-elastic vibration. The experiment was carried out in a circuit-type wind tunnel having a 200mm×200mm working section of 2000mm length at the Reynolds number Re of 8820. Two-dimensional circular cylinders with diameter D=20mm were aligned at regular spaces S in a single row normal to the main stream. The spacing ratio between two adjoining circular cylinders was constant as S/D=1.5 for the unsteady flow measurement. The time-mean velocity was measured by use of a laser Doppler velocimeter. The unsteady flow pattern around an oscillating cylinder was observed by the flow visualization in a water channel. Consequently, it was found that the occurrence of the fluid-elastic vibration is caused by the phenomenon of jet-switch for the circular cylinder row.
doi_str_mv 10.1299/kikaib.64.4010
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source J-STAGE (Japan Science & Technology Information Aggregator, Electronic) Freely Available Titles - Japanese; EZB-FREE-00999 freely available EZB journals
subjects Flow-Induced Vibration
title Unsteady Flow around Two-Dimensional Circular Cylinder Row in Fluid Elastic Vibration
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