CHASSAGNE, Rémi; FILIPPINI, Andrea Gilberto; RICCHIUTO, Mario; BONNETON, Philippe

doi:10.1017/jfm.2019.287

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CHASSAGNE, Rémi
Université Grenoble Alpes [2016-2019] [UGA [2016-2019]]
Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture [IRSTEA]
Erosion torrentielle neige et avalanches [UR ETGR (ETNA)]

FILIPPINI, Andrea Gilberto
Environnements et Paléoenvironnements OCéaniques [EPOC]

RICCHIUTO, Mario

Certified Adaptive discRete moDels for robust simulAtions of CoMplex flOws with Moving fronts [CARDAMOM]

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Article de revue

Ce document a été publié dans

Journal of Fluid Mechanics. 2019, vol. 870, p. 595-616

Résumé en anglais

In this paper, a detailed analysis of undular bore dynamics in channels of variable cross-section is presented. Two undular bore regimes, LowFroude Number (LFN) and High Froude Number (HFN), are simulated with a Serre-Green-Naghdi model, and the results are compared with theexperiments by Treske. We show that contrary to Favre waves and HFN bores, which are controlled by dispersive non-hydrostatic mechanisms, LFN bores correspond to a hydrostatic phenomenon. The dispersive-like properties of the LFN bores is related to wave refraction on the banks in a way similar to that of edge waves in the nearshore. A fully hydrostatic asymptotic model for these dispersive-like bores is derived and compared to the observations, confirming our claim< Réduire

URI

https://oskar-bordeaux.fr/handle/20.500.12278/188471

DOI

http://dx.doi.org/10.1017/jfm.2019.287

Project ANR

Tsunamis en Atlantique et MaNche : Définition des Effets par Modélisation - ANR-11-RSNR-0023

Unités de recherche

EPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805