直列異径２円柱から発生する渦放出音

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  • Vortex-Shedding Sound Generated by Two Circular Cylinders Arranged in Tandem.
  • チョクレツ イケイ 2 エンチュウ カラ ハッセイスル ウズ ホウシュツオン

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Aerodynamic sound generated by vortices shed from two circular cylinders with different diameters arranged in tandem was investigated experimentally. The diameter ratio d/D was smaller than or equal to 1, where d and D are the diameters of the upstream and downstream cylinders respectively. The sound was represented as a function of the spacing between the cylinders L and the diameter ratio. The magnitude of sound from the upstream cylinder was found to change periodically with L. This change was explained by assuming a feedback mechanism for the flow between the cylinders.

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