Fully localised edge states in boundary layers

Khapko T, Kreilos T, Schlatter P, Duguet Y, Eckhardt B, Henningson DS (2015)

Publication Type: Conference contribution

Publication year: 2015

Publisher: TU Delft

Conference Proceedings Title: Proceedings - 15th European Turbulence Conference, ETC 2015

Event location: Delf, NLD

Abstract

Investigation of the laminar–turbulent boundary is performed in a boundary-layer flow. Constant homogeneous suction is applied at the wall in order to prevent the spatial growth of the layer, leading to the parallel Asymptotic Suction Boundary Layer (ASBL). Edge tracking is performed in a large computational domain allowing for full spatial localisation of the structures on the laminar–turbulent separatrix. The obtained dynamics of the state goes through calm and bursting phases. During the latter the structure grows in size, shedding vortices downstream of its core which viscously decay during the calm phases. Comparison with the computation in spatially growing boundary layer is made. The influence of the Reynolds number and the path leading from the edge state to turbulent flow are considered.

Authors with CRIS profile

Philipp Schlatter

Involved external institutions

Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH) SE Sweden (SE) École Polytechnique Fédérale de Lausanne (EPFL) CH Switzerland (CH) Computer Science Laboratory for Mechanics and Engineering Sciences / Laboratoire d'informatique pour la mécanique et les sciences de l'ingénieur (LIMSI-CNRS) FR France (FR) Philipps-Universität Marburg DE Germany (DE)

How to cite

APA:

Khapko, T., Kreilos, T., Schlatter, P., Duguet, Y., Eckhardt, B., & Henningson, D.S. (2015). Fully localised edge states in boundary layers. In Proceedings - 15th European Turbulence Conference, ETC 2015. Delf, NLD: TU Delft.

MLA:

Khapko, Taras, et al. "Fully localised edge states in boundary layers." Proceedings of the 15th European Turbulence Conference, ETC 2015, Delf, NLD TU Delft, 2015.

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