Flow-excited acoustic resonance of two tandem cylinders in cross-flow

Mohany, Atef; Ziada, Samir

doi:10.1016/j.jfluidstructs.2005.05.018

Cited by 53 publications

(30 citation statements)

References 17 publications

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“…Therefore, the lock-in for this case always occurs near the condition of frequency coincidence. In the tandem cylinders case, a similar acoustic resonance was observed by Mohany and Ziada (2005) at flow velocities near the condition of frequency coincidence. They designated this resonance range as the coincidence range.…”

Section: Article In Presssupporting

confidence: 70%

“…Since the results of both cases are found to be similar, only the case with T/D ¼ 2.5 will be addressed here for the sake of brevity. This spacing ratio will be addressed first because its aeroacoustic behaviour has been found to exemplify the classical mechanism of ARTICLE IN PRESS vortex-induced acoustic resonance, which is similar to that observed for the case of an isolated cylinder (Blevins and Bressler, 1993;Mohany and Ziada, 2005).…”

Section: Investigated Geometries and Dimensionless Parametersmentioning

confidence: 87%

“…The microphone was mounted flush against the top acrylic plate of the test-section. The optimal location of the microphone was based on the work of Mohany and Ziada (2005). The microphone was calibrated using a G.R.A.S sound calibrator type 42AB.…”

Section: Experimental Set-upmentioning

confidence: 99%

See 2 more Smart Citations

Flow-excited acoustic resonance of two side-by-side cylinders in cross-flow

Hanson

Mohany

Ziada

2009

Journal of Fluids and Structures

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Section: Article In Presssupporting

confidence: 70%

Section: Investigated Geometries and Dimensionless Parametersmentioning

confidence: 87%

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Flow-excited acoustic resonance of two side-by-side cylinders in cross-flow

Hanson

Mohany

Ziada

2009

Journal of Fluids and Structures

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“…A strong effect of spacing ratio has been recorded both on the amplitude of the maximum acoustic pressure and the Strouhal number range of the resonance. [25][26][27] This stresses the need of an assessment for the effect of the hydrodynamic interference, between successive cavities in corrugated pipe, on whistling.…”

Section: Introductionmentioning

confidence: 99%

Aeroacoustic power generated by multiple compact axisymmetric cavities: Effect of hydrodynamic interference on the sound production

Nakiboglu

Hirschberg

2012

Physics of Fluids

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Aeroacoustic sound generation due to self-sustained oscillations by a series of compact axisymmetric cavities exposed to a grazing flow is studied both experimentally and numerically. The driving feedback is produced by the velocity fluctuations resulting from a coupling of vortex sheddings at the upstream cavity edges with acoustic standing waves in the coaxial pipe. When the cavities are separated sufficiently from each other, the whistling behavior of the complete system can be determined from the individual contribution of each cavity. When the cavities are placed close to each other there is a strong hydrodynamic interference between the cavities which affects both the peak amplitude attained during whistling and the corresponding Strouhal number. This hydrodynamic interference is captured successfully by the proposed numerical method.

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“…This ''classical'' resonance mechanism is illustrated in Fig. 1(a) and is classified by Mohany and Ziada (2005) as the ''coincidence resonance''.…”

Section: Introductionmentioning

confidence: 99%