INTERNAL WAVE ATTRACTORS IN 3D GEOMETRY

INTERNAL WAVE ATTRACTORS IN 3D GEOMETRY Full article

Source

ПЕРМСКИЕ ГИДРОДИНАМИЧЕСКИЕ НАУЧНЫЕ ЧТЕНИЯ
Compilation, Пермский государственный национальный исследовательский университет. Пермь.2018. 367 c.

Output data

Year: 2018, Pages: 246-249 Pages count : 4

Tags

INTERNAL WAVE, ATTRACTOR, FOCUSING

Authors

PILLET G. ¹ , ERMANYUK E.V. ² , MAAS L.R.M. ³ , SIBGATULLIN I.N ⁴ , DAUXOIS T. ¹

Affiliations

1	Universite de Lyon, ENS de Lyon, Universite Claude Bernard, CNSR, Laboratoire de Physique, 69342 Lyon, France
2	Lavrentyev Institute of Hydrodynamics, Siberian Branch of Russian Academy of Sciences
3	Institute for Marine and Atmospheric Research, Utrecht University,
4	Lomonosov Moscow State University

We study the propagation of internal waves in 3D geometry in presence of a sloping wall. First, we consider a classic trapezoidal quasi-2D setup filled with a linearly stratified fluid to get internal wave attractors. Energy is injected into the system by a wave generator of small width compared to the width of the setup. We show experimentally and numerically that reflection due to Phillips' law is responsible for formation of quasi-2D attractors spanning the whole width of the tank. Second, we consider a long and narrow tank having an inclined bottom to reproduce a 3D canal. The energy is injected in the along-canal direction parallel to the slope. The wave energy ends up forming 2D internal wave attractors in planes that are transverse to the initial propagation direction. This refractive focusing mechanism prevents indefinite transmission of internal wave energy along canal, what may be important in oceanographic applications.

PILLET G. , ERMANYUK E.V. , MAAS L.R.M. , SIBGATULLIN I.N. , DAUXOIS T.
INTERNAL WAVE ATTRACTORS IN 3D GEOMETRY
In compilation ПЕРМСКИЕ ГИДРОДИНАМИЧЕСКИЕ НАУЧНЫЕ ЧТЕНИЯ. – Пермский государственный национальный исследовательский университет., 2018. – C.246-249. РИНЦ

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