Complexity of localised coherent structures in a boundary-layer flow

Khapko T, Duguet Y, Kreilos T, Schlatter P, Eckhardt B, Henningson DS (2014)

Publication Type: Journal article

Publication year: 2014

Journal

European Physical Journal E EDP Sciences: EPJ

Book Volume: 37

Article Number: 32

Journal Issue: 4

DOI: 10.1140/epje/i2014-14032-3

Abstract

We study numerically transitional coherent structures in a boundary-layer flow with homogeneous suction at the wall (the so-called asymptotic suction boundary layer ASBL). The dynamics restricted to the laminar-turbulent separatrix is investigated in a spanwise-extended domain that allows for robust localisation of all edge states. We work at fixed Reynolds number and study the edge states as a function of the streamwise period. We demonstrate the complex spatio-temporal dynamics of these localised states, which exhibits multistability and undergoes complex bifurcations leading from periodic to chaotic regimes. It is argued that in all regimes the dynamics restricted to the edge is essentially low-dimensional and non-extensive. © 2014 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.

Authors with CRIS profile

Philipp Schlatter

Involved external institutions

Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH)

Sweden (SE) Computer Science Laboratory for Mechanics and Engineering Sciences / Laboratoire d'informatique pour la mécanique et les sciences de l'ingénieur (LIMSI-CNRS)

France (FR) Philipps-Universität Marburg

Germany (DE)

How to cite

APA:

Khapko, T., Duguet, Y., Kreilos, T., Schlatter, P., Eckhardt, B., & Henningson, D.S. (2014). Complexity of localised coherent structures in a boundary-layer flow. European Physical Journal E, 37(4). https://dx.doi.org/10.1140/epje/i2014-14032-3

MLA:

Khapko, Taras, et al. "Complexity of localised coherent structures in a boundary-layer flow." European Physical Journal E 37.4 (2014).

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