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Direct numerical simulation of a turbulent boundary layer with passive scalar transport
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0001-9627-5903
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0002-4346-4732
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0001-7864-3071
2010 (English)In: Direct and Large-Eddy Simulation 7, 2010, 321-327 p.Conference paper, Published paper (Refereed)
Abstract [en]

A fully-resolved direct numerical simulation (DNS) of a spatially developing turbulent boundary layer with passive scalars over a flat plate under zero pressure gradient (ZPG) has been carried out using a spectral method with about 40M grid points. The highest Reynolds number based on the momentum thickness and free-stream velocity is Re θ = 850 and the molecular Prandtl numbers for the scalars range from 0.2 to 2.0. The intermittent region near the boundary-layer edge was identified by investigating the high-order moments and PDF. In addition, it was found that the streamwise velocity is similar to the scalar distribution at Pr = 0. 71 with isoscalar wall boundary condition. Far away from the wall, the two quantities become less correlated.

Place, publisher, year, edition, pages
2010. 321-327 p.
Series
ERCOFTAC Series, ISSN 1382-4309 ; 13 (4)
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-86872DOI: 10.1007/978-90-481-3652-0_48ISI: 000306194300048Scopus ID: 2-s2.0-84964805992OAI: oai:DiVA.org:kth-86872DiVA: diva2:501103
Conference
Direct and Large-Eddy Simulation 7. Trieste, Italy. September 8-10 2008
Note

QC 20120419

Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2016-11-03Bibliographically approved

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Schlatter, PhilippBrandt, LucaHenningson, Dan S.

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