Influence of waves on Lagrangian acceleration in two-dimensional turbulent flows
ESAIM. Proceedings, Tome 32 (2011), pp. 231-241
Cet article a éte moissonné depuis la source EDP Sciences
The Lagrangian statistics in rotating Saint-Venant turbulence are studied by means of direct numerical simulation using a pseudo-spectral discretization fully resolving, both in time and space, all the inertio-gravity waves present in the system. To understand the influence of waves, three initial conditions are considered, one which is dominated by waves, one which is dominated by vortices, and one which is intermediate between these two extreme cases. It is found that Lagrangian acceleration is strongly influenced by the presence of waves, as are the Lagrangian velocity increments, for incremements that are sufficiently short, and that vortex motion influences mostly the component of Lagrangian acceleration which is perpendicular to the local velocity.
Affiliations des auteurs :
Romain Nguyen van yen 1 ; Benjamin Kadoch 2 ; Vivek Kumar 1 ; Benjamin Ménétrier 1 ; Marie Farge 1 ; Kai Schneider 2 ; Diane Douady 3 ; Lionel Guez 1
@article{EP_2011_32_a16,
author = {Romain Nguyen van yen and Benjamin Kadoch and Vivek Kumar and Benjamin M\'en\'etrier and Marie Farge and Kai Schneider and Diane Douady and Lionel Guez},
title = {Influence of waves on {Lagrangian} acceleration in two-dimensional turbulent flows},
journal = {ESAIM. Proceedings},
pages = {231--241},
year = {2011},
volume = {32},
doi = {10.1051/proc/2011023},
language = {en},
url = {http://geodesic.mathdoc.fr/articles/10.1051/proc/2011023/}
}
TY - JOUR AU - Romain Nguyen van yen AU - Benjamin Kadoch AU - Vivek Kumar AU - Benjamin Ménétrier AU - Marie Farge AU - Kai Schneider AU - Diane Douady AU - Lionel Guez TI - Influence of waves on Lagrangian acceleration in two-dimensional turbulent flows JO - ESAIM. Proceedings PY - 2011 SP - 231 EP - 241 VL - 32 UR - http://geodesic.mathdoc.fr/articles/10.1051/proc/2011023/ DO - 10.1051/proc/2011023 LA - en ID - EP_2011_32_a16 ER -
%0 Journal Article %A Romain Nguyen van yen %A Benjamin Kadoch %A Vivek Kumar %A Benjamin Ménétrier %A Marie Farge %A Kai Schneider %A Diane Douady %A Lionel Guez %T Influence of waves on Lagrangian acceleration in two-dimensional turbulent flows %J ESAIM. Proceedings %D 2011 %P 231-241 %V 32 %U http://geodesic.mathdoc.fr/articles/10.1051/proc/2011023/ %R 10.1051/proc/2011023 %G en %F EP_2011_32_a16
Romain Nguyen van yen; Benjamin Kadoch; Vivek Kumar; Benjamin Ménétrier; Marie Farge; Kai Schneider; Diane Douady; Lionel Guez. Influence of waves on Lagrangian acceleration in two-dimensional turbulent flows. ESAIM. Proceedings, Tome 32 (2011), pp. 231-241. doi: 10.1051/proc/2011023
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