TY - JOUR
T1 - Development of the equipment to suppress low frequency nappe oscillation
AU - Nagamine, Takuo
AU - Minegishi, Yuichi
AU - Sekiya, Akira
AU - Goto, Masahiro
AU - Takaki, Kyouji
AU - Mori, Hiroki
AU - Sato, Yuichi
PY - 2011
Y1 - 2011
N2 - This paper describes experimental study of nappe oscillation at a weir which is two meters high.Falling water sheet flowing over a weir sometimes oscillates at a low frequency.The water sheet oscillation causes low frequency sound problems.So far, spoilers are used to prevent from such vibrations. We develop the new equipment to suppress low frequency oscillation and investigate how to suppress low frequency sound from nappe oscillation. Its sound can be suppressed by setting equipment at the lower end of a falling water sheet. Experimental results show the characteristic of nappe oscillation and effectiveness of the equipment on low frequency sound.
AB - This paper describes experimental study of nappe oscillation at a weir which is two meters high.Falling water sheet flowing over a weir sometimes oscillates at a low frequency.The water sheet oscillation causes low frequency sound problems.So far, spoilers are used to prevent from such vibrations. We develop the new equipment to suppress low frequency oscillation and investigate how to suppress low frequency sound from nappe oscillation. Its sound can be suppressed by setting equipment at the lower end of a falling water sheet. Experimental results show the characteristic of nappe oscillation and effectiveness of the equipment on low frequency sound.
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U2 - 10.1299/kikaic.77.2211
DO - 10.1299/kikaic.77.2211
M3 - Article
AN - SCOPUS:84859594252
SN - 0387-5024
VL - 77
SP - 2211
EP - 2220
JO - Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
JF - Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
IS - 778
ER -