Interaction of noise disturbances and streamwise streaks

Schlatter P, Deusebio E, Brandt L, De Lange R (2010)

Publication Type: Conference contribution

Publication year: 2010

Publisher: Springer Verlag

Book Volume: 18

Pages Range: 355-360

Conference Proceedings Title: IUTAM Bookseries

Event location: SWE

ISBN: 9789048137220

DOI: 10.1007/978-90-481-3723-7_57

Abstract

The evolution of disturbances in boundary layers modified through spanwise periodic, steady streamwise streaks is studied via numerical simulations. The disturbances are introduced via random two- and three-dimensional noise of various amplitudes close to the inlet (Rex ≈ 60000). The aim of the present work is to determine the impact of the interaction of streaks and noise on the arising flow structures and, eventually, on the location and details of the breakdown to turbulence. It is shown that large-scale 2D noise can be controlled via streaks, whereas the more general 3D noise configuration is prone to premature transition due to increased instability of the introduced streaks. It is interesting to note that the latter transition scenario closely resembles the flow structures found in bypass transition. Transition in true bypass transtion forced by ambient free-stream turbulence is also promoted by the addition of streamwise streaks in the laminar part of the boundary layer. © 2010 Springer Science+Business Media B.V.

Authors with CRIS profile

Philipp Schlatter

Involved external institutions

Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH) SE Sweden (SE) Eindhoven University of Technology / Technische Universiteit Eindhoven (TU/e) NL Netherlands (NL)

How to cite

APA:

Schlatter, P., Deusebio, E., Brandt, L., & De Lange, R. (2010). Interaction of noise disturbances and streamwise streaks. In IUTAM Bookseries (pp. 355-360). SWE: Springer Verlag.

MLA:

Schlatter, Philipp, et al. "Interaction of noise disturbances and streamwise streaks." Proceedings of the 7th IUTAM Symposium on Laminar-Turbulent Transition, SWE Springer Verlag, 2010. 355-360.

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