000014562 001__ 14562
000014562 005__ 20161115100155.0
000014562 04107 $$aeng
000014562 046__ $$k2016-08-21
000014562 100__ $$aHenningson, Dan, S
000014562 24500 $$aBypass transition in boundary layers

000014562 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014562 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014562 506__ $$arestricted
000014562 520__ $$2eng$$aThe boundary layer above a flat plate exposed to free-stream turbulence becomes turbulent through the initiation of turbulent patches that spread as they are advected downstream. In order to model and describe the intermittency factor (a measures of the fraction of space that is filled with turbulence) we combine results on the receptivity of the boundary layer with nonlinear concepts developed in internal flows. The model gives a physically motivated expression for the spatial distribution of spot nucleation events that is then integrated into a probabilistic cellular automaton. The free parameters are fixed by fits to numerical simulations. The model reproduces the spatial variation of the intermittency factor for different turbulence levels. The results show how the recent theoretical progress on transitional wall-bounded flows can be extended to the much wider class of spatially developing boundary layers flow.

000014562 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014562 653__ $$a

000014562 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014562 720__ $$aHenningson, Dan, S
000014562 8560_ $$ffischerc@itam.cas.cz
000014562 8564_ $$s66402$$uhttps://invenio.itam.cas.cz/record/14562/files/TS.FM07-1.05.pdf$$yOriginal version of the author's contribution as presented on CD,  page 919, code TS.FM07-1.05
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000014562 962__ $$r13812
000014562 980__ $$aPAPER