Aeolian tones associated with resonant vibration

Leehey, Patrick; Hanson, Carl E.

doi:10.1016/s0022-460x(70)80052-9

Cited by 49 publications

(15 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Naturally, ( * equals unity in fully correlated #ow ( "l, "l/2). For turbulent shedding conditions the centroid appears to be of the same magnitude as the correlation length (Leehey & Hanson 1971;Norberg 2000). The exponential drop, R ** "exp(!s/ ), which seems to work well as a model function for Re'8;10 (Norberg 2000), gives " .…”

Section: Fluctuating Lift and Spanwise Correlationmentioning

confidence: 85%

Flow Around a Circular Cylinder: Aspects of Fluctuating Lift

Norberg

2001

Journal of Fluids and Structures

249

View full text Add to dashboard Cite

Section: Fluctuating Lift and Spanwise Correlationmentioning

confidence: 85%

Flow Around a Circular Cylinder: Aspects of Fluctuating Lift

Norberg

2001

Journal of Fluids and Structures

249

View full text Add to dashboard Cite

“…Blake [29] showed that, when the vortex shedding frequency is close to the resonance frequency of the cylinder, the vibration may alter the amplitude of the vortex shedding peak and could also affect the Strouhal number obtained. Leehey and Hanson found that the vibration of the cylinder can increase the amplitude of the fluctuating lift coefficient and the correlation length for sufficiently high amplitudes of vibration [30].…”

Section: Effect Of the Cylinder Vibrationmentioning

confidence: 99%

Experimental study of the aerodynamic noise radiated by cylinders with different cross-sections and yaw angles

Iglesias

Thompson

Smith

2016

Journal of Sound and Vibration

View full text Add to dashboard Cite

Vortex shedding from cylinders has been extensively studied due to its occurrence in many engineering fields. Many experimental studies reported in the literature focus on the aerodynamics of the vortex shedding process but the literature about the radiated noise is more scarce. The aim of the work presented here is to extend the available noise data. Aero-acoustic wind tunnel tests were carried out using cylinders with different cross-sections: circular, square, rectangular and elliptical. Flow speeds between 20 and 50 m/s were used, corresponding to Reynolds numbers in the range from 1.6 × 10 4 to 1.2 × 10 5 . The dependence of the noise on the yaw angle, flow speed, cross-sectional shape, angle of attack and radiation angle (directivity) is assessed. The results obtained are compared, where possible, with those found in the literature for similar cases. It is intended that the results can be used for the validation and calibration of numerical and empirical aerodynamic noise prediction models.

show abstract

“…which the solid boundary acts upon the fluid (Curle 1955;Leehey & Hanson 1970). In volcanology, sound emitted by a steady gas jet carrying solid fragments has been previously accounted for by a dipole (Woulff & McGetchin 1976;Vergniolle & Caplan-Auerbach 2006).…”

Section: Aerodynamic Flowmentioning

confidence: 99%

Acoustic multipole source model for volcanic explosions and inversion for source parameters

Kim

Lees

Ruiz

2012

Geophysical Journal International

102

View full text Add to dashboard Cite

SUMMARY Volcanic explosions are accompanied by strong acoustic pressure disturbances in the atmosphere. With a proper source model, these acoustic signals provide invaluable information about volcanic explosion dynamics. Far‐field solutions to volcanic infrasound radiation have been derived above a rigid half‐space boundary, and a simple inversion method was developed based on the half‐space model. Acoustic monopole and dipole sources were estimated simultaneously from infrasound waveforms. Stability of the inversion procedure was assessed in terms of variances of source parameters, and the procedure was reliable with at least three stations around the infrasound source. Application of this method to infrasound observations recorded at Tungurahua volcano in Ecuador successfully produced a reasonable range of source parameters with acceptable variances. Observed strong directivity of infrasound radiation from explosions at Tungurahua are successfully explained by the directivity of a dipole source model. The resultant dipole axis, in turn, shows good agreement with the opening direction of the vent at Tungurahua, which is considered to be the origin of the dipole source. The method is general and can be utilized to study any monopole, dipole or combined sources generated by explosions.

show abstract

Aeolian tones associated with resonant vibration

Cited by 49 publications

References 13 publications

Flow Around a Circular Cylinder: Aspects of Fluctuating Lift

Flow Around a Circular Cylinder: Aspects of Fluctuating Lift

Experimental study of the aerodynamic noise radiated by cylinders with different cross-sections and yaw angles

Acoustic multipole source model for volcanic explosions and inversion for source parameters

Contact Info

Product

Resources

About