The acoustic mechanisms of 2D and 3D edge tones and a 2D small air-reed instrument have been studied numerically with compressible Large Eddy Simulation (LES). Sound frequencies of the 2D and 3D edge tones obtained numerically change with the jet velocity well following Brown’s semi-empirical equation, while that of the 2D air-reed instrument behaves in a different manner and obeys the semi-empirical theory, so called Cremer-Ising-Coltman theory. We have also calculated aerodynamic sound sources for the 2D edge tone and the 2D air-reed instrument relying on Ligthhill’s acoustic analogy and have discussed similarities and differences between them. The sound source of the air-reed instrument is more localized around the open mouth compared with that of the edge tone due to the effect of the strong sound field excited in the resonator.
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ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
July 24–29, 2011
Hamamatsu, Japan
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4440-3
PROCEEDINGS PAPER
Numerical Study on Air-Reed Instruments With LES
Kin’ya Takahashi,
Kin’ya Takahashi
Kyushu Institute of Technology, Iizuka, Fukuoka, Japan
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Masataka Miyamoto,
Masataka Miyamoto
Kyushu Institute of Technology, Iizuka, Fukuoka, Japan
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Yasunori Ito,
Yasunori Ito
Kyushu Institute of Technology, Iizuka, Fukuoka, Japan
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Toshiya Takami,
Toshiya Takami
Kyushu University, Fukuoka, Japan
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Taizo Kobayashi,
Taizo Kobayashi
Kyushu University, Fukuoka, Japan
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Akira Nishida,
Akira Nishida
Kyushu University, Fukuoka, Japan
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Mutsumi Aoyagi
Mutsumi Aoyagi
Kyushu University, Fukuoka, Japan
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Kin’ya Takahashi
Kyushu Institute of Technology, Iizuka, Fukuoka, Japan
Masataka Miyamoto
Kyushu Institute of Technology, Iizuka, Fukuoka, Japan
Yasunori Ito
Kyushu Institute of Technology, Iizuka, Fukuoka, Japan
Toshiya Takami
Kyushu University, Fukuoka, Japan
Taizo Kobayashi
Kyushu University, Fukuoka, Japan
Akira Nishida
Kyushu University, Fukuoka, Japan
Mutsumi Aoyagi
Kyushu University, Fukuoka, Japan
Paper No:
AJK2011-08011, pp. 2135-2145; 11 pages
Published Online:
May 25, 2012
Citation
Takahashi, K, Miyamoto, M, Ito, Y, Takami, T, Kobayashi, T, Nishida, A, & Aoyagi, M. "Numerical Study on Air-Reed Instruments With LES." Proceedings of the ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D. Hamamatsu, Japan. July 24–29, 2011. pp. 2135-2145. ASME. https://doi.org/10.1115/AJK2011-08011
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