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
Mechanisms for spatial steady three-dimensional disturbance growth in a non-parallel and separating boundary layer
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.
Show others and affiliations
2009 (English)In: Journal of Fluid Mechanics, ISSN 0022-1120, E-ISSN 1469-7645, Vol. 634, 165-189 p.Article in journal (Refereed) Published
Abstract [en]

Steady linear three-dimensional disturbances are investigated in a two-dimensional laminar boundary layer. The boundary layer is Subject to a streamwise favourable-to-adverse pressure gradient and eventually undergoes separation. The separating flow corresponds to the first part of a pressure-induced laminar-separation bubble on a flat plate. Streamwise disturbance development in such a flow is studied by means of direct numerical simulation, a water-tunnel experiment and an adjoint-based parabolic theory suited to study spatial optimal growth. A complete overview of the disturbance evolution in various areas of the Favourable-to-adverse pressure gradient laminar boundary layer is given. Results from all investigation methods show overall good agreement with respect to disturbance growth and shape within the entire domain. In the favourable pressure-gradient region and, again, slightly downstream of separation, transient growth caused by the lift-Up effect dominates disturbance behaviour. In the adverse pressure-gradient region, a modal instability is observed. Evidence is presented that this instability is of Gortler type.

Place, publisher, year, edition, pages
2009. Vol. 634, 165-189 p.
Keyword [en]
gortler vortices, transition, bubble, instability, stability, vortex, flow, streaks
Identifiers
URN: urn:nbn:se:kth:diva-18778DOI: 10.1017/s0022112009007149ISI: 000270065600008Scopus ID: 2-s2.0-76249105224OAI: oai:DiVA.org:kth-18778DiVA: diva2:336825
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2011-02-01Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Authority records BETA

Henningson, Dan S.

Search in DiVA

By author/editor
Marxen, OlafLevin, OriHenningson, Dan S.
By organisation
MechanicsLinné Flow Center, FLOW
In the same journal
Journal of Fluid Mechanics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 59 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