Flow-excited resonances of acoustic trapped modes in ducted shallow cavities are reviewed in this paper. The main components of the feedback mechanism which sustains the acoustic resonance are discussed with particular emphasis on the complexity of the trapped mode shapes and the strong three-dimensionality of the cavity flow oscillations during the resonance. Due to these complexities of the flow and sound fields, it is still difficult to theoretically or numerically model the interaction mechanism which sustains the acoustic resonance. Strouhal number and resonance amplitude charts are therefore included to help designers avoid the occurrence of resonance in new installations, and effective countermeasures are provided which can be implemented to suppress trapped mode resonances in operating plants.
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August 2016
Review Articles
Review of Flow-Excited Resonance of Acoustic Trapped Modes in Ducted Shallow Cavities
Kareem Aly,
Kareem Aly
Mechanical Engineering,
Cairo University,
Giza 12613, Egypt
Cairo University,
Giza 12613, Egypt
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Samir Ziada
Samir Ziada
Mechanical Engineering,
McMaster University,
Hamilton, ON L8S 4L8, Canada
McMaster University,
Hamilton, ON L8S 4L8, Canada
Search for other works by this author on:
Kareem Aly
Mechanical Engineering,
Cairo University,
Giza 12613, Egypt
Cairo University,
Giza 12613, Egypt
Samir Ziada
Mechanical Engineering,
McMaster University,
Hamilton, ON L8S 4L8, Canada
McMaster University,
Hamilton, ON L8S 4L8, Canada
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received July 24, 2015; final manuscript received December 5, 2015; published online April 28, 2016. Assoc. Editor: Tomomichi Nakamura.
J. Pressure Vessel Technol. Aug 2016, 138(4): 040803 (16 pages)
Published Online: April 28, 2016
Article history
Received:
July 24, 2015
Revised:
December 5, 2015
Citation
Aly, K., and Ziada, S. (April 28, 2016). "Review of Flow-Excited Resonance of Acoustic Trapped Modes in Ducted Shallow Cavities." ASME. J. Pressure Vessel Technol. August 2016; 138(4): 040803. https://doi.org/10.1115/1.4032251
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