Art

J-GLOBAL ID：200902279552655520   Reference number：09A0818115

Sound-Attenuation Effect of a Partially Shut Rectangular Chamber at the End of an Inner Cylinder, Modeling a Ceiling-Mounted Ventilator

円筒内部末端における部分的に閉じた長方形チャンバの音波減衰効果 屋根に設置したベンチレータ

Author (3)： SADAMOTO Akira (Dep. of Mechanical Engineering, Chubu Univ.) ,  SHIRAHAMA Seiji (Environmental Technol. Res. Lab., Panasonic Ecology Systems Co., Ltd) ,  ANDO Yasuhiro (Dep. of Mechanical Engineering, Chubu Univ.)
Material： Journal of Environment and Engineering (Web)  (J Environ Eng (Web))
Volume： 4  Issue： 2  Page： 314-325 (J-STAGE)  Publication year： 2009 
JST Material Number： U0025A  ISSN： 1880-988X  Document type： Article
Article type： 原著論文  Country of issue： Japan (JPN)  Language： ENGLISH (EN)

Thesaurus term： *ventilator ,  sound isolation ,  *acoustic attenuation ,  resonance ,  *acoustic resonator ,  modeling ,  experimental equipment ,  chamber

JST classification (2)： Propagation of sound waves  (BB03030G) ,  Ventilation  (PC02040B)

Reference (7)：

• (1) Matsushita Seiko Co. Ltd., “Ceiling Mounted Ventilation Fan”, Japanese Patent P3279834 (2002).
• (2) Sadamoto A., Shirahama S. and Tsubakishita Y., Sound attenuation by a resonant effect of a rectangular box containing a cylinder as a model of a ceiling-mounted ventilator, Journal of Environment and Engineering, Vol.3, No.1 (2008), pp.13-24.
• (3) Sadamoto A. and Murakami Y., Reduction of Discrete-Frequency Fan Noise Using Slit-Like Expansion Chambers, International Journal of Rotating Machinery, Vol.9, No.4 (2003), pp.239-246.
• (4) Munjal M.L., Acoustics of Ducts and Mufflers, (1987), p.11 and p.71, John Wiley and Sons, Inc.
• (5) Lee J.W., Lee J.M. and Kim S.H., Acoustical analysis of multiple cavities connected by necks in series with a consideration of evanescent waves, Journal of Sound and Vibration, Vol.273, No.3 (2004), pp.515-524.

Terms in the title (8)： 円 ,  筒内部 ,  長方形 ,  チャンバ ,  音波 ,  減衰効果 ,  屋根 ,  ベンチレータ