AM05-23-004 単独および複数の矩形柱から発生する空力音の特性(騒音1,一般講演)

概要

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Aerodynamic noise occurred from handrail of bridge or balcony in strong wind became problem. It is important to develop database of characteristics of aerodynamic sound from basic structural member such as rectangular cylinder. In this study, aerodynamic sound from single and multiple rectangular cylinder is investigated experimentally with low-noise wind tunnel. For aerodynamic sound from square cylinder, SPL is maximum at angle of attack 2°, minimum at 10°. For plate cascades, peak frequency increases step-by-step with the increase of wind speed and sound source is in leeward plate cascades mainly.
2005-09-05