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Conference papers

Coupling 3D Navier-Stokes and 1D shallow water models

Mehdi Pierre Daou 1 Eric Blayo 1 Antoine Rousseau 2 Olivier Bertrand 3 Manel Tayachi Pigeonnat 1 Christophe Coulet 4 Nicole Goutal 5
1 MOISE - Modelling, Observations, Identification for Environmental Sciences
Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology, LJK - Laboratoire Jean Kuntzmann, Inria Grenoble - Rhône-Alpes
2 LEMON - Littoral, Environment: MOdels and Numerics
HSM - Hydrosciences Montpellier, CRISAM - Inria Sophia Antipolis - Méditerranée , IMAG - Institut Montpelliérain Alexander Grothendieck
4 Eau & Environnement
Eau & Environnement
Abstract : The present work addresses the problem of coupling hydrodynamical models with different spatial dimensions, which can be used in order to reduce the computational cost of river numerical models. We show that this problem can be tackled quite efficiently by designing a simple algorithm using techniques borrowed from domain decomposition theory. This algorithm is non intrusive, i.e. allows using existing numerical models with very few modifications. The method is illustrated on an academic test-case, namely a free surface flow in a bend-shaped channel. A 3-D Navier-Stokes model is coupled with a 1-D shallow water model, and results are compared to those obtained in a fully 3-D case. It is shown that the coupling algorithm provides an accurate solution, which can be improved thanks to an iterative algorithm (Schwarz method). This study is performed using the Mascaret-Telemac system.
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Submitted on : Thursday, May 22, 2014 - 7:52:04 PM
Last modification on : Saturday, January 22, 2022 - 3:28:54 AM
Long-term archiving on: : Friday, August 22, 2014 - 1:36:07 PM


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  • HAL Id : hal-00995171, version 1


Mehdi Pierre Daou, Eric Blayo, Antoine Rousseau, Olivier Bertrand, Manel Tayachi Pigeonnat, et al.. Coupling 3D Navier-Stokes and 1D shallow water models. Simhydro 2014, Jun 2014, Sophia Antipolis, France. ⟨hal-00995171⟩



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