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
Statistical modeling of vortex generators in pressure gradient boundary layers
KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
2009 (English)In: 6th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2009, International Symposium on Turbulence and Shear Flow Phenomena, TSFP , 2009, p. 647-652Conference paper, Published paper (Refereed)
Abstract [en]

Modeling arrays of passive vortex generators (VGs) pairs, mounted in a flat plate boundary layer with adverse pressure gradient (APG) flow and generating streamwise counter rotating vortex structures is the object of this investigation. Usually, a sound computational fluid dynamics (CFD) investigation requires an adequate grid with a corresponding large number of grid points around such VGs in order to obtain an accurate solution of this flow case. This, in turn, leads to a time-demanding grid generation which often comes along with lots of practical challenges during the creation. An effective way to get around this time-consuming process is to introduce a way to model these flow separation devices statistically and, by that, to add their statistical physical effects to the governing equations rather than resolving their geometries in the computational grid. This approach for the modeling of passive VGs turbulent flow separation devices is presented for APG flow over a flat plate using the CFD code Edge by FOI, the Swedish Defence Research Agency. Moreover, computational results for three dimensional fully resolved VGs as well as experimental results without VGs are evaluated and compared to this statistical VG model approach. It is shown that flow separation can be successfully prevented by means of the statistical VG model.

Place, publisher, year, edition, pages
International Symposium on Turbulence and Shear Flow Phenomena, TSFP , 2009. p. 647-652
Keywords [en]
Atmospheric thermodynamics, Boundary layer flow, Boundary layers, Flow separation, Plates (structural components), Pressure gradient, Shear flow, Turbulence, Vortex flow, Adverse pressure gradient flows, Computational grids, Computational results, Counter-rotating vortices, Flat plate boundary layers, Governing equations, Separation devices, Statistical modeling, Computational fluid dynamics
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-237222Scopus ID: 2-s2.0-85048440370OAI: oai:DiVA.org:kth-237222DiVA, id: diva2:1258922
Conference
Seoul National University Seoul; South Korea; 22 June 2009 through 24 June 2009
Note

QC 20181026

Available from: 2018-10-26 Created: 2018-10-26 Last updated: 2018-10-26Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

ScopusConference

Search in DiVA

By author/editor
Von Stillfried, FlorianJohansson, A. V.
By organisation
Linné Flow Center, FLOW
Fluid Mechanics and Acoustics

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 11 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