Effect of cavities inside tube banks on acoustic resonance |
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| Authors: | Hiromitsu Hamakawa Hidenobu Miyagi Eiichi Nishida |
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| Affiliation: | [1]Department of Mechanical Engineering, Oita University, 700 Dannoharu, Oita 870-1192, Japan [2]Cyuouhatsujyou Kougyou, 503 Jyuuni-machi, Hita, 877-8501, Japan [3]Department of Mechanical Systems Engineering, Shonan Institute of Technology, 1-1-25 Tuj idou Nisikaigan, Fuj isawa, 251-8511, Japan |
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| Abstract: | In the present paper the attention is focused on the effect of small cavities inside in-line tube banks on acoustic resonance which occurred in the two-dimensional model of boiler.We measured the sound pressure level,the amplitude and the phase delay of acoustic pressures and the gap velocity.As a result,we found many peak frequencies of sound pressure level with different Strouhal numbers,mainly about St=0.15,0.26 and 0.52.The variation of SPL for St=0.26,0.52 components in the tube banks with cavities was... |
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| Keywords: | Acoustic Resonance Flow Induced Noise In-line Tube Banks Cavity Boiler |
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