000014758 001__ 14758
000014758 005__ 20161115100201.0
000014758 04107 $$aeng
000014758 046__ $$k2016-08-21
000014758 100__ $$aGoudar, Manu
000014758 24500 $$aAuto-generation by interaction of weak eddies

000014758 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014758 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014758 506__ $$arestricted
000014758 520__ $$2eng$$aFor channel flow, we explore how the interaction of weak eddies produces additional eddies by means of auto-generation. This is done by DNS of two eddies with different initial strengths, initial sizes and initial stream-wise spacing between them. The numerical procedure followed is similar to Zhou et al[l]. The two eddies merge into a single stronger eddy when a larger upstream and a smaller downstream eddy are placed within a certain initial stream-wise separation distance. Subsequently, the resulting stronger eddy is observed to auto-generate new eddies. The non-merging cases with small initial stream-wise separation also auto-generate. The auto-generation is characterized by a rapid lift-up of an initial eddy, which blocks the incoming flow and leads to shear-layer roll-up and formation of a new eddy. The same sequence of events is observed in a fully developed turbulent boundary layer[2].

000014758 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014758 653__ $$a

000014758 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014758 720__ $$aGoudar, Manu
000014758 8560_ $$ffischerc@itam.cas.cz
000014758 8564_ $$s202208$$uhttps://invenio.itam.cas.cz/record/14758/files/TS.FM15-1.03.pdf$$yOriginal version of the author's contribution as presented on CD,  page 1508, code TS.FM15-1.03
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000014758 962__ $$r13812
000014758 980__ $$aPAPER