000014954 001__ 14954
000014954 005__ 20161115100207.0
000014954 04107 $$aeng
000014954 046__ $$k2016-08-21
000014954 100__ $$aDuguet, Yohann
000014954 24500 $$aLocalized structures on the edge in boundary layers and their traces in bypass transition

000014954 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014954 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014954 506__ $$arestricted
000014954 520__ $$2eng$$aInvestigation of the laminar–turbulent separatrix 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 localization on the separatrix. The obtained localized structure experiences recurrent dynamics going through calm and bursting phases. During calm phases the structure’s active core consists of a single low-speed streak which develops sinuous instabilities leading to a burst in energy. During the burst new streaks are created, with the structure growing in size and its core drifting in both planar directions. The recurrent simple structure observed during calm phases is compared with those seen in the early development of the minimal seed and during bypass transition. The implications on the dynamical systems view of the transition process are discussed.

000014954 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014954 653__ $$a

000014954 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014954 720__ $$aDuguet, Yohann
000014954 8560_ $$ffischerc@itam.cas.cz
000014954 8564_ $$s60812$$uhttps://invenio.itam.cas.cz/record/14954/files/TS.MS01-2.02.pdf$$yOriginal version of the author's contribution as presented on CD,  page 52, code TS.MS01-2.02
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000014954 962__ $$r13812
000014954 980__ $$aPAPER