長方形スリットからの噴流によって発生する離散周波数騷音の研究 : 第2報,騒音発生と速度場の諸特性との関係

概要

論文の詳細を見る
Pure tones are unexpectedly generated from slits or gaps between a window and a pole or a damper when wind is strong. We named this type of pure tone a whistle tone. We previously showed that whistle tones are generated by air jet flow from a rectangular slit. The velocity field and its time variation characteristics were investigated in detail to clarify the relationship between them and the generation of the whistle tones. The results are as follows : (1) the frequencies of the whistle tones coincide with those of the velocity fluctuation, and (2) the scale of the turbulence of the jet or the range of the intense velocity fluctuation has the scale comparable with the exit area of the slit used.
社団法人日本機械学会の論文
1994-06-25