000014573 001__ 14573
000014573 005__ 20161115100155.0
000014573 04107 $$aeng
000014573 046__ $$k2016-08-21
000014573 100__ $$aAsai, Masahito
000014573 24500 $$aExperimental investigation of instability of convecting local high- shear layer

000014573 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014573 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014573 506__ $$arestricted
000014573 520__ $$2eng$$aTo obtain a better understanding of the mechanism of wave breakdown into high-frequency hairpin eddies (which was identified as appearance of high-frequency spikes in the waveform of velocity fluctuation) in boundary-layer transition initially caused by the growth of Tollmien-Schlichting waves, development of pulse-like disturbances superposed on a convecting three-dimensional local high-shear layer artificially generated in laminar boundary layer was examined experimentally. In the flow immediately prior to the appearance of high-frequency spike, the group velocity of a wave-packet originating from the pulse disturbance was found to be almost equal to the convection velocity of the high-shear layer. This caused the disturbance to continue growing on the high-shear layer with strong frequency-selectivity, just like in an absolutely unstable flow.

000014573 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014573 653__ $$a

000014573 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014573 720__ $$aAsai, Masahito
000014573 8560_ $$ffischerc@itam.cas.cz
000014573 8564_ $$s151249$$uhttps://invenio.itam.cas.cz/record/14573/files/TS.FM07-3.04.pdf$$yOriginal version of the author's contribution as presented on CD,  page 941, code TS.FM07-3.04
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000014573 962__ $$r13812
000014573 980__ $$aPAPER