000013993 001__ 13993
000013993 005__ 20161115094007.0
000013993 04107 $$aeng
000013993 046__ $$k2016-08-21
000013993 100__ $$aHerault, Johann
000013993 24500 $$aA new model of turbulent mixing by a jet impacting a stratified interface

000013993 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000013993 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000013993 506__ $$arestricted
000013993 520__ $$2eng$$aWe investigate experimentally the mechanism of erosion by a turbulent jet impinging a density interface with moderate Reynolds numbers and low Froude numbers. From our measurements, we present a new scenario of turbulent mixing. The turbulent eddies contribute indirectly to the mixing by generating surface gravity waves. The waves are then amplified by a mechanism similar to the Miles instability characterized by the presence of a critical layer, where the phase velocity of the waves matches the velocity of the mean flow. This amplification leads to the breaking of the wave, which mixes efficiently both fluids.

000013993 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013993 653__ $$a

000013993 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000013993 720__ $$aHerault, Johann
000013993 8560_ $$ffischerc@itam.cas.cz
000013993 8564_ $$s134573$$uhttps://invenio.itam.cas.cz/record/13993/files/PO.FM14-1.11.174.pdf$$yOriginal version of the author's contribution as presented on CD, XMLout( page 1485, code PO.FM14-1.11.174).
000013993 962__ $$r13812
000013993 980__ $$aPAPER