000014955 001__ 14955
000014955 005__ 20161115100207.0
000014955 04107 $$aeng
000014955 046__ $$k2016-08-21
000014955 100__ $$aKushwaha, Anubhav
000014955 24500 $$aTemporal and spatial intermittencies within Newtonian turbulence

000014955 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014955 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014955 506__ $$arestricted
000014955 520__ $$2eng$$aDirect numerical simulations of a pressure driven turbulent flow are performed in a large rectangular channel. Extreme and moderate drag regimes within turbulence that have earlier been found to exist temporally in minimal channels at low Reynolds numbers have been observed both spatially and temporally in full-size turbulent flows. These intermittent regimes, namely, “hyperactive”, “active” and “hibernating” turbulence, display very different structural and statistical features. Using conditional sampling, we identify these intermittent intervals and present the differences between them in terms of simple quantities like mean velocity, wall shear stress and flow structures. By conditionally sampling of the low wall shear stress events in particular, we show that a Newtonian trajectory in large domains occasionally

000014955 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014955 653__ $$a

000014955 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014955 720__ $$aKushwaha, Anubhav
000014955 8560_ $$ffischerc@itam.cas.cz
000014955 8564_ $$s187745$$uhttps://invenio.itam.cas.cz/record/14955/files/TS.MS01-2.03.pdf$$yOriginal version of the author's contribution as presented on CD,  page 54, code TS.MS01-2.03
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000014955 962__ $$r13812
000014955 980__ $$aPAPER