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Numerical modelling of meandering jets in shallow rectangular reservoir using two different turbulent closures
Peltier, Yann; Erpicum, Sébastien; Archambeau, Pierre et al.
2016In Erpicum, Sébastien; Dewals, Benjamin; Archambeau, Pierre et al. (Eds.) Sustainable Hydraulics in the Era of Global Change
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Keywords :
Engineering research; Equations of motion; Fighter aircraft; Friction; Principal component analysis; Algebraic modeling; Objective parameters; Proper orthogonal decompositions; Shallow water equations; Sub-grid scale models; Transient behavior; Tuning parameter; Turbulent closures; Reservoirs (water)
Abstract :
[en] In this article, the shallow water equations are used to model meandering flows in shallow rectangular reservoir.Two distinct meandering flows in termof friction regimewere modelled (frictional and nonfrictional) and two turbulent closures were tested with various values for their tuning parameters. One turbulent closure accounts for both the 2D horizontal (k-ε) and 3D vertical (algebraic model) turbulent mixing, while the second turbulent closure accounts for the unresolved scales of the shallow water equations through a subgridscale model (Smagorinsky). The purpose here is to give advices on which turbulent closure is the most likely appropriate for modelling meandering flows. A Proper Orthogonal Decomposition (POD) is performed on the simulation results for extracting objective parameters accounting for transient behaviors and to be compared with experiments. Comparisons between models and with experiments indicate a great dependence of the simulation results to the modelling of the small scales of the turbulence. © 2016 Taylor & Francis Group, London.
Disciplines :
Civil engineering
Author, co-author :
Peltier, Yann ;  University of Liege, ArGEnCo Department, Research Group of Hydraulics in Environmental and Civil Engineering, Liege, Belgium, Université Paris-Est, Laboratory for Hydraulics Saint-Venant (ENPC, EDF R&D, CEREMA), Chatou, France
Erpicum, Sébastien  ;  Université de Liège > Scientifiques attachés au Doyen (Sc.appliquées)
Archambeau, Pierre  ;  Université de Liège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Pirotton, Michel ;  Université de Liège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Dewals, Benjamin  ;  Université de Liège > Département ArGEnCo > Hydraulics in Environmental and Civil Engineering
Language :
English
Title :
Numerical modelling of meandering jets in shallow rectangular reservoir using two different turbulent closures
Publication date :
2016
Event name :
4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016
Event date :
27-29 July 2016
Audience :
International
Main work title :
Sustainable Hydraulics in the Era of Global Change
Editor :
Erpicum, Sébastien  ;  Université de Liège - ULiège > Urban and Environmental Engineering
Dewals, Benjamin  ;  Université de Liège - ULiège > Urban and Environmental Engineering
Archambeau, Pierre  ;  Université de Liège - ULiège > Urban and Environmental Engineering
Pirotton, Michel ;  Université de Liège - ULiège > Urban and Environmental Engineering
Publisher :
CRC Press/Balkema
Pages :
202-209
Peer reviewed :
Peer reviewed
Commentary :
177959 9781138029774
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since 17 August 2017

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