kth.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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
Uniform blowing and suction applied to nonuniform adverse-pressure-gradient wing boundary layers
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Fluid Mechanics and Engineering Acoustics. (SimEx/FLOW)ORCID iD: 0000-0003-0790-8460
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Fluid Mechanics and Engineering Acoustics. (SimEx/FLOW)ORCID iD: 0000-0001-6570-5499
Karlsruhe Techonol, Inst Fluid Mech, D-76131 Karlsruhe, Germany..
Karlsruhe Techonol, Inst Fluid Mech, D-76131 Karlsruhe, Germany..
Show others and affiliations
2021 (English)In: Physical Review Fluids, E-ISSN 2469-990X, Vol. 6, no 11, article id 113904Article in journal (Refereed) Published
Abstract [en]

A detailed analysis of the effects of uniform blowing, uniform suction, and body-force damping on the turbulent boundary layer developing around a NACA4412 airfoil at moderate Reynolds number is presented. The flow over the suction and the pressure sides of the airfoil is subjected to a nonuniform adverse pressure gradient and a moderate favorable pressure gradient, respectively. We find that the changes in total skin friction due to blowing and suction are not very sensitive to different pressure-gradient conditions or the Reynolds number. However, when blowing and suction are applied to an adverse-pressure-gradient (APG) boundary layer, their impact on properties such as the boundary-layer thickness, the intensity of the wall-normal convection, and turbulent fluctuations are more pronounced. We employ the Fukagata-Iwamoto-Kasagi decomposition [K. Fukagata et al., Phys. Fluids 14, 73 (2002)] and spectral analysis to study the interaction between intense adverse pressure gradient and these control strategies. We find that the control modifies skin-friction contributions differently in adverse-pressure-gradient and zero-pressure-gradient boundary layers. In particular, the control strategies modify considerably both the streamwisedevelopment and the pressure-gradient contributions, which have high magnitude when a strong adverse pressure gradient is present. Blowing and suction also impact the convection of structures in the wall-normal direction. Overall, our results suggest that it is not possible to simply separate pressure-gradient and control effects, a fact to take into account in future studies on control design in practical applications.

Place, publisher, year, edition, pages
American Physical Society (APS) , 2021. Vol. 6, no 11, article id 113904
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-306365DOI: 10.1103/PhysRevFluids.6.113904ISI: 000724664200003Scopus ID: 2-s2.0-85120523807OAI: oai:DiVA.org:kth-306365DiVA, id: diva2:1620158
Note

QC 20211215

Available from: 2021-12-15 Created: 2021-12-15 Last updated: 2022-06-25Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records

Atzori, MarcoVinuesa, RicardoSchlatter, Philipp

Search in DiVA

By author/editor
Atzori, MarcoVinuesa, RicardoSchlatter, Philipp
By organisation
Fluid Mechanics and Engineering Acoustics
In the same journal
Physical Review Fluids
Fluid Mechanics and Acoustics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 29 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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