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Amplitude modulation of pressure in turbulent boundary layer
KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0002-2711-4687
2016 (English)In: International Journal of Heat and Fluid Flow, ISSN 0142-727X, E-ISSN 1879-2278Article in journal (Refereed) Published
Abstract [en]

The interaction between pressure fluctuations associated with large- and small-scale motions is studied. Using a small pressure probe, both static pressure and wall pressure fluctuations were measured inside the zero-pressure gradient boundary layer at relatively high Reynolds numbers. How the large scales in the log-region affect the small scales near the wall is analyzed by means of an amplitude modulation procedure. Analyzing the wall pressure fluctuations, it was found that the large scale interacts with the small scale but there is a time-lag between them. © 2016 Elsevier Inc.

Place, publisher, year, edition, pages
Elsevier, 2016.
Keyword [en]
Amplitude modulation, Boundary layer, Large-scale motion, Pressure fluctuation, Boundary layer flow, Modulation, Reynolds number, Turbulent flow, High Reynolds number, Large scale motion, Pressure probes, Static pressure, Turbulent boundary layers, Wall-pressure fluctuations, Zero-pressure-gradient boundary layers, Boundary layers
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-196152DOI: 10.1016/j.ijheatfluidflow.2016.05.019ScopusID: 2-s2.0-84978500094OAI: diva2:1047013

Correspondence Address: Tsuji, QC 20161116

Available from: 2016-11-16 Created: 2016-11-14 Last updated: 2016-11-16Bibliographically approved

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Johansson, Arne V.
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