IIMAS - FENOMEC
UNAM
Resumen:
In contrast to the atmosphere of the Earth, the driving force of the Ocean is
not a heat engine. Vertical mechanisms of energy transfer due to thermal processes
and wind play signifcant role mostly in the vicinity of the surface of the Ocean.
Meanwhile the global dynamics of the Ocean is also greatly aected by deep water
processes and mixing. It means that now one of the most important questions in
the dynamics of the oceans is related to the cascade of mechanical energy in the
abyss and its contribution to mixing. Here, we propose internal-wave attractors in
the large-amplitude regime as a unique self-consistent experimental and numerical
setup that models a cascade of triadic interactions transferring energy from large-
scale monochromatic input to multi-scale internal-wave motion. We also provide
signatures of a discrete wave turbulence framework for internal waves. Beyond this
regime, we have a clear transition to a regime of small-scale high-vorticity events
which induce mixing. Also we have studied mixing due to boundary interaction
and wave attractors formed from 3D sources of monochromatic waves in trapezoidal
geometry.
1. C. Brouzet, S. Joubaud, E. Ermanyuk, I. Sibgatullin, T. Dauxois. Energy cascade in internal-
wave attractors // Europhysics Letters.-2016.-113:44001-http://dx.doi.org/10.1209/0295-
5075/113/44001
2. C. Brouzet, I. Sibgatullin, H. Scolan, E. Ermanyuk, T. Dauxois. Internal wave attractors
examined using laboratory experiments and 3d numerical simulations // Journal of Fluid
Mechanics 2016.-Vol. 793.-P. 109-131.-http://dx.doi.org/10.1017/jfm.2016.119
Informes: coloquiomym@gmail.com, o al 5622-3564.