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Amplitude modulation of pressure in turbulent boundary layer
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0002-2711-4687
2015 (English)In: 9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015, TSFP-9 , 2015Conference paper, Published paper (Refereed)
Abstract [en]

The interaction between large and small scale motions from the point of pressure fluctuation is studied. Using the small pressure probe, both the static pressure and wall pressure fluctuations were measured inside the zeropressure gradient boundary layer at relatively high Reynolds numbers. How the large scales in outside affect the small scales near wall is analyzed by means of statistical method. High amplitude positive and negative pressure fluctuations are also analyzed which associate with coherent motions inside the boundary layer. Another interesting aspect is the amplitude modulations of pressure and this topic is reported in this paper.

Place, publisher, year, edition, pages
TSFP-9 , 2015.
Keyword [en]
Amplitude modulation, Boundary layer flow, Boundary layers, Modulation, Reynolds number, Shear flow, Turbulence, Wall flow, Coherent motion, High Reynolds number, Negative pressures, Pressure fluctuation, Pressure probes, Turbulent boundary layers, Wall-pressure fluctuations, Zero-pressure-gradient boundary layers, Atmospheric thermodynamics
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-222968ISI: 000390745800002Scopus ID: 2-s2.0-85034443940ISBN: 9780000000002 OAI: oai:DiVA.org:kth-222968DiVA, id: diva2:1193298
Conference
9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015, 30 June 2015 through 3 July 2015
Note

QC 20180326

Available from: 2018-03-26 Created: 2018-03-26 Last updated: 2018-03-26Bibliographically approved

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Johansson, Arne V.

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