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Evolution of traveling crossflow modes over a swept flat plate
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. (SGCE)ORCID iD: 0000-0002-3251-8328
KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0002-1146-3241
2009 (English)Conference paper, Published paper (Refereed)
Abstract [en]

An experimental investigation has been carried out to examine the growth of traveling crossflow instabilities over a swept flat plate mimicking the Falkner-Skan-Cooke boundary layer. Different turbulence generating grids were placed upstream of the leading edge to vary incoming parameters. Hot-wire measurements were taken for one component of velocity and compared with linear PSE analysis. These showed a decrease in the growth rate for increasing turbulence intensity, which was most likely cause by nonlinear effects. Streamwise correlation measurements were also taken. All the cases except one triggered the same spanwise integral length scale inside the boundary layer. Receptivity coefficients are needed to do the PSE calculations and to see the need for nonlinear PSE.

Place, publisher, year, edition, pages
2009.
National Category
Other Engineering and Technologies not elsewhere specified
Identifiers
URN: urn:nbn:se:kth:diva-87122DOI: 10.1007/978-90-481-3723-7_36ISI: 000277097200036OAI: oai:DiVA.org:kth-87122DiVA: diva2:501402
Conference
Proceedings of the 7th IUTAM Symp. on Laminar-Turbulent Transition, June 23-26, Stockholm, Sweden
Note
QC 20120214Available from: 2012-02-14 Created: 2012-02-14 Last updated: 2012-02-14Bibliographically approved

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Fransson, Jens H. M.Alfredsson, P. Henrik

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