Flow induced acoustic resonance in in-line tube banks

被引：0

作者：

Hiromitsu Hamakawa

Tohru Fukano

Eiichi Nishida

Yoshikazu Satou

机构：

[1] Oita University,Department of Mechanical Engineering

[2] Kurume Institute of Technology,Department of Environmental Symbiosis Engineering

[3] Japan Honda Motor Co.,Department of Mechanical Engineering, Shonan Institute of Technology

[4] Ltd.,undefined

来源：

Journal of Thermal Science | 2006年 / 15卷

关键词：

acoustic resonance; flow induced vibration; vortex; in-line tube banks; TB533;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In the present paper the attention is focused on the relation between vortex shedding phenomena and acoustic resonance which occurred in the two-dimensional model of boiler. There were tube banks with in-line arrangement for small tube pitch ratio. We measured the sound pressure level, the phase delay of acoustic pressures, the spectrum of velocity fluctuation and the gap velocity. As a result, we found two peak frequencies of sound pressure level with different Strouhal numbers St, mainly about 0.26 and 0.52. The noise of St=0.26 was the resonance of transverse mode and St=0.52 was longitudinal mode. The vortex shedding of St=0.15 was generated inside the tube banks without acoustic resonance. As gap velocity increased, we observed that the peak level of spectrum was weak and broad-banded. The onset velocity of the acoustic resonance of longitudinal mode was lower than that of transverse mode.

引用

共 16 条

[1] Païdoussis M. P.(1982)A Review of Flow-induced Vibrations in Reactors and Reactor Components J. Nuclear Eng. Design 74 31-60
[2] Pettigrew M. J.(2003)Vibration analysis of shel and tube heat exchangers: an overview-Partl:flow, damping, fluidelastic instability J. Fluids Struct. 18 469-483
[3] Taylor C. E.(2003)Vibration analysis of shell and tube heat exchangers: an overview-Part2: vibration response, fretting-wear, guidelines J. Fluids Struct. 18 485-500
[4] Pettigrew M. J.(1988)A Review of Cross-flow Induced Vibration in Heat Exchanger Tube Arrays J. Fluids Struct. 7 73-93
[5] Taylor C. E.(1984)Guidelines for the instability flow velocity of tube arrays in crossflow J. Sound Vib. 93 439-455
[6] Weaver D. S.(1965)Buffeting excitation of boiler tube vibration J. Mech. Eng. Sci. 7 431-439
[7] Fitzpatrick J. A.(1968)Flow-induced Vibration and Noise in Tube-bank Heat Exchangers due to Von Karman Streets Trans. ASME, J. Eng. Ind., Series B 94 134-146
[8] Chen S. S.(1993)Vortex shedding in an in-line tube bundle with large tube spacings J. Fluids Struct. 7 661-687
[9] Owen P. R.(1987)Acoustic resonance in heat exchanger tube bundles-Part II: Prediction and suppression of resonance Trans. ASME, J. Press. Vessel Technol. 109 282-288
[10] Chen Y. N.(1987)Acoustic resonance in heat exchanger tube bundles-Part I: Physical nature of the phenomenon Trans. ASME, J. Press. Vessel Technol. 109 275-281

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