Wind tunnel tests for aeolian noise generated by a smooth circular cylinder

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (7) : 85-90.

SHEN Guo-hui1, ZHANG Yang1, YU Shi-ce1, ZHU Min-jie2, ZHENG Zhao-yang2

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Abstract

In order to study aeolian noise generated by a smooth circular cylinder under different wind speed conditions, an acoustic wind tunnel was built to conduct aeolian noise tests of rod system type structures. The wind tunnel tests for circular cylinders of 11 diameters were conducted under 4 wind speeds. The frequency spectra’s characteristics and dominant frequencies of aeolian noises generated by circular cylinders were analyzed. Finally, the variation laws of accumulative dominant sound pressure levels and dominant frequency band widths with varying wind velocity and Reynolds number were investigated. Results showed that dominant frequencies of wind noises generated by circular cylinders are proportional to wind speed and inverse proportional to diameter of circular cylinder; Strouhal number calculated from dominant frequencies within Reynolds number range of 3e3-1e5 is about 0.20, it has a gradually decreasing trend with increase in Reynolds number; the accumulative dominant sound pressure levels increase with increase in Reynolds number, they disperse more within a lower Reynolds number range of less than 3e4, and less within a higher Reynolds number range.

Key words

aeolian noise / smooth circular cylinder / acoustic wind tunnel / wind tunnel test / sound pressure level

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SHEN Guo-hui1, ZHANG Yang1, YU Shi-ce1, ZHU Min-jie2, ZHENG Zhao-yang2. Wind tunnel tests for aeolian noise generated by a smooth circular cylinder[J]. Journal of Vibration and Shock, 2018, 37(7): 85-90

References

[1] Powell A. Theory of vortex sound[J]. Journal of the Acoustical Society of America, 1964, 36(1):177-195.
[2] Revell J D, Prydz R A, Hays A P. Experimental study of airframe noise vs drag relationship for circular cylinders[R]. Lockheed-California Corporation, LR 28074, Feb. 25, 1977.
[3] Fujita H, Wei S, Furutani H, et al. Experimental investigations and prediction of aerodynamic sound generated from square cylinders[C]// AIAA/CEAS 4th Aeroacoustics Conference, 02-04 June 1998, Toulouse, France: AIAA 98-2369.
[4] Fujita H. The characteristics of the Aeolian tone radiated from two-dimensional cylinders[J]. Fluid Dynamics Research, 2010, 42(1):154-168.
[5] King W F, Pfizenmaier E. An experimental study of sound generated by flows around cylinders of different cross-section[J]. Journal of Sound and Vibration, 2009, 328:318-337.
[6] Iglesias E L, Thompson D J, Smith M G. Experimental study of the aerodynamic noise radiated by cylinders with different cross-sections and yaw-angles[J]. Journal of Sound and Vibration, 2016, 361:108-129.
[7] Moreau D J, Doolan C J. Flow-induced sound of wall-mounted finite length cylinders[J]. AIAA Journal, 2013, 51(10):2493-2502.
[8] Porteous R, Doolan C J, Moreau D J. Directivity pattern of flow-induced noise from a wall-mounted, finite length circular cylinder[C]// Proceedings of Acoustics, Victor Harbor, Australia, 2013.
[9] Hutcheson F V, Brooks T F. Noise radiation from single and multiple rod configurations[J]. International Journal of Aeroacoustics, 2012, 11(3):291-334.
[10] Alomar A, Angland D, Zhang X, et al. Experimental study of noise emitted by circular cylinders with large roughness[J]. Journal of Sound and Vibration, 2014, 333:6474-6497.
[11] Geyer T, Sarradj E, Herold G. Flow noise generation of cylinders with soft porous cover [C]// AIAA/CEAS 21st Aeroacoustics Conference, 22-26 June 2015, Dallas, Texas: AIAA 2015-3147
[12] Sueki T, Takaishi T, Ikeda M, et al. Application of porous material to reduce aerodynamic sound from bluff bodies[J]. Fluid Dynamics Research, 2010, 42(42): 154-168.