Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
High-order moments of streamwise fluctuations in a turbulent channel flow with spanwise rotation
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW. KTH, Centres, SeRC - Swedish e-Science Research Centre.ORCID iD: 0000-0002-9819-2906
2018 (English)In: PHYSICAL REVIEW FLUIDS, ISSN 2469-990X, Vol. 3, no 2, article id 022601Article in journal (Refereed) Published
Abstract [en]

It is well known that the spanwise rotation in turbulent channel flow alters the mean velocity distribution to a linear law. In the present work, we have studied the higher-order moments of the streamwise fluctuations in a turbulent channel flow with spanwise rotation. Our results show that in a significant part of the channel the 2p-order moments, raised by the power 1/p with p = 1,2, ... ,6, also follow linear behavior according to <(u'(+))(2p)>(1/p) = a(p) (y/h) + b(p). Here, u'(+) is the streamwise velocity fluctuation normalized by the global friction velocity, h is the channel half width, and b(p) and a(p) are the intercept and the slope, respectively, which vary with Reynolds and rotation numbers. The linear regions can be extended by introducing a self-similar scaling, that is, 2p-order moments as a function of 2q-order moments. The slopes in the self-similar scaling a(p)/a(1) do not reveal sub-Gaussian behavior as in nonrotating wall-bounded flows, but rather Gaussian or super-Gaussian behaviors.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2018. Vol. 3, no 2, article id 022601
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-223793DOI: 10.1103/PhysRevFluids.3.022601ISI: 000424921500001Scopus ID: 2-s2.0-85043281406OAI: oai:DiVA.org:kth-223793DiVA, id: diva2:1188287
Funder
Swedish Research Council, 621-2016-03533
Note

QC 20180307

Available from: 2018-03-07 Created: 2018-03-07 Last updated: 2018-03-07Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records BETA

Brethouwer, Gert

Search in DiVA

By author/editor
Brethouwer, Gert
By organisation
MechanicsLinné Flow Center, FLOWSeRC - Swedish e-Science Research Centre
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 2 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf