The aeroacoustic sources generated by flow over a cylindrical shallow cavity in a pipeline are examined in the presence of plane sound waves at various Strouhal numbers and sound intensities. The cavity is exposed to high Reynolds number fully developed turbulent flow. Extensive PIV flow measurements are performed to characterize the unsteady velocity and vorticity fields at various time instants within the sound cycle. Finite element analysis is used to obtain the particle velocity field of the sound field. The results of the PIV flow measurements and those of the finite element simulations are combined into Howe’s aeroacoustic integrand to compute the spatial and temporal distributions of the aeroacoustic sources resulting from the cavity shear layer interaction with the sound field. The results are compared with the measured aeroacoustic source strength obtained by means of the Sound Wave Method (SWM) [1]. The advantages and disadvantages of both techniques are discussed.
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ASME 2014 Pressure Vessels and Piping Conference
July 20–24, 2014
Anaheim, California, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-4601-8
PROCEEDINGS PAPER
PIV Measurements of Aeroacoustic Sources of a Shallow Cavity in a Pipeline Available to Purchase
S. Mohamed,
S. Mohamed
McMaster University, Hamilton, ON, Canada
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S. Ziada
S. Ziada
McMaster University, Hamilton, ON, Canada
Search for other works by this author on:
S. Mohamed
McMaster University, Hamilton, ON, Canada
S. Ziada
McMaster University, Hamilton, ON, Canada
Paper No:
PVP2014-28508, V004T04A054; 10 pages
Published Online:
November 18, 2014
Citation
Mohamed, S, & Ziada, S. "PIV Measurements of Aeroacoustic Sources of a Shallow Cavity in a Pipeline." Proceedings of the ASME 2014 Pressure Vessels and Piping Conference. Volume 4: Fluid-Structure Interaction. Anaheim, California, USA. July 20–24, 2014. V004T04A054. ASME. https://doi.org/10.1115/PVP2014-28508
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