Boundary layer interaction with porous surface and implications for aerodynamic noise reduction

Syamir Alihan Showkat Ali, Carlos R. Ilário da Silva

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

The present study discusses the mechanisms of flow interaction with porous surfaces as a passive flow control method for blunt trailing edges. To better understand the effect of flow interaction with a porous surface, measurements have been carried out for the boundary layer growth and boundary layer surface pressure and velocity correlations. Hot-wire measurements are also performed to investigate the energy content of the turbulent structure within the boundary layer. Two types of porous materials are considered for this study. Results have shown that the use of porous materials can stabilize the boundary layer growth, lessen the surface pressure fluctuations and reduce the energy content of the large turbulent structure in the outer layer. These results are essential for understanding the flow-porous interaction in real world applications.
Original languageEnglish
Title of host publicationProceedings of the 23rd International Congress on Sound and Vibration (ICSV 2016)
Subtitle of host publicationAthens, Greece, 10-14 July 2016
PublisherInternational Institute of Acoustics and Vibration
Number of pages8
ISBN (Print)9789609922623
Publication statusPublished - 29 Apr 2016

Publication series

NameProceedings of the International Congress on Sound and Vibration
PublisherInternational Institute of Acoustics and Vibration
Volume23
ISSN (Print)2329-3675

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