| PHILIPPE FRAUNIE*, HATEM HOUCINE, ADEL GHARBI †
Y.CHASHECHKIN%
*Université deToulon, Aix-Marseille Université, CNRS/INSU, IRD, MIO, UM 110,
83957, La Garde Cedex, France
fraunie@univ-tln.fr http://mio.pytheas.univ-amu.fr/
† Laboratoire de Mécanique des Fluides, Faculté des Sciences de Tunis, Université El
Manar, 2092 Tunis, Tunisie hatem_houcine@yahoo.fr
% Institute for Problems in Mechanics of the Russian Academy of Sciences, Moscow,
Russia, chakin@ipmnet.ru
ABSTRACT
In laboratory investigations, increased attention has been given to internal waves
generated by stationary placed oscillating sources and moving bodies in stratified fluids
[1]. The main attention was paid to study flows past bodies of perfect shapes like
sphere [2], cylinder [3] of thin strip [3] which are the best theoretical (analytical
or numerical) studies. Due to simplicity of geometry, flow around a strip has a
potential to investigate separately effects of a drag and lift forces on the body by
changing the slope of the horizontally moving strip which can be placed vertically [1],
horizontally [2], or be tilted under some angle to the direction of towing velocity
[5].
Numeric modeling of a flow past vertical strip uniformly towing with permanent velocity
in horizontal direction in a linearly stratified talk which was based on a finite differences
solver adapted to the low Reynolds Navier-Stokes equation with transport equation for
salinity (LES simulation [6] and RANS [7]) has demonstrated reasonable agreement with
data of Schlieren visualization, density marker and probe measurements of internal wave
fields.
The chosen test cases allowed demonstrating the ability of selected numerical methods to
represent stably stratified flows over horizontal strip [4] and hill type 2D obstacles [1, 3] with
generation of internal waves.
ACKNOWLEDGMENTS
This research work was supported by the Region Provence Alpes Côte d’Azur –
Modtercom project. The work was also supported by the Russian Foundation for Basic
Research (grant 12-01-00128).
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