000014962 001__ 14962
000014962 005__ 20161115100207.0
000014962 04107 $$aeng
000014962 046__ $$k2016-08-21
000014962 100__ $$aKatasonov, Mikhail
000014962 24500 $$aOrigination of wave packets at localized streaks

000014962 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014962 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014962 506__ $$arestricted
000014962 520__ $$2eng$$aTurbulence production processes in gradient boundary layer have been studied experimentally. The longitudinal localized disturbances arising in the boundary layer under the action of free—stream turbulence were artificially modeled using a blowing—suction technique. Wave packets, or forerunners, produced in the boundary layer, in the region preceding the abrupt local change of flow velocity near the longitudinal disturbance fronts, were examined. The results of the study make reason to consider the forerunners as wave packets of 3D instability (T—S) waves. It was observed that the forerunners are strongly amplified in the adverse pressure gradient flow. It was found that at downstream development of the forerunners they transform into so — called Lambda—structures.

000014962 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014962 653__ $$a

000014962 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014962 720__ $$aKatasonov, Mikhail
000014962 8560_ $$ffischerc@itam.cas.cz
000014962 8564_ $$s170978$$uhttps://invenio.itam.cas.cz/record/14962/files/TS.MS01-3.04.pdf$$yOriginal version of the author's contribution as presented on CD,  page 67, code TS.MS01-3.04
.
000014962 962__ $$r13812
000014962 980__ $$aPAPER