Control of Vortex Oscillation by Internal Sound Excitation at the Corner of a Cylinder

トラン テイエン アン; 小林 紘士

doi:10.14887/kazekosymp.18.0.000049.0

PROCEEDINGS OF 18th NATIONAL SYMPOSIUM ON WIND ENGINEERING

DOI https://doi.org/10.14887/kazekosymp.18.0.000049.0

Conference information

Host: Science Council of Japan

Co-host: Architectural Institute of Japan, Japan Association for Wind Engineering, The Institute of Electrical Engineering of Japan, Japanese Society of Steel Construction, Japanese Society of Civil Engineering, Meteorological Society of Japan

CONTROL OF VORTEX OSCILLATION BY INTERNAL SOUND EXCITATION AT THE CORNER OF A CYLINDER

*Tien Anh TRAN, Hiroshi KOBAYASHI

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Keywords: vortex oscillation, rectangular cylinder, suppression, applied sound

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 000049

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Abstract

This paper investigates the possibility of suppressing flow-induced vibration of a rectangular cylinder by applying periodic excitation to the flow around the cylinder. The excitation is applied at the leading edge of a rectangular cylinder through the sound by speakers. The characteristics of the vortex-induced vibration are examined through experiments. The experimental results show that the vibration amplitude of the cylinder was reduced significantly when there is a sound excitation with a specific frequency.

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