Comparison between a coupled 1D-2D model and a fully 2D model for supercritical flow simulation in crossroads

Handle URI:
http://hdl.handle.net/10754/563902
Title:
Comparison between a coupled 1D-2D model and a fully 2D model for supercritical flow simulation in crossroads
Authors:
Ghostine, Rabih; Hoteit, Ibrahim ( 0000-0002-3751-4393 ) ; Vazquez, Jose; Terfous, Abdelali; Ghenaim, Abdellah; Mose, Robert
Abstract:
In open channel networks, flow is usually approximated by the one-dimensional (1D) Saint-Venant equations coupled with an empirical junction model. In this work, a comparison in terms of accuracy and computational cost between a coupled 1D-2D shallow water model and a fully two-dimensional (2D) model is presented. The paper explores the ability of a coupled model to simulate the flow processes during supercritical flows in crossroads. This combination leads to a significant reduction in the computational time, as a 1D approach is used in branches and a 2D approach is employed in selected areas only where detailed flow information is essential. Overall, the numerical results suggest that the coupled model is able to accurately simulate the main flow processes. In particular, hydraulic jumps, recirculation zones, and discharge distribution are reasonably well reproduced and clearly identified. Overall, the proposed model leads to a 30% reduction in run times. © 2014 International Association for Hydro-Environment Engineering and Research.
KAUST Department:
Applied Mathematics and Computational Science Program; Physical Sciences and Engineering (PSE) Division; Environmental Science and Engineering Program; Earth Science and Engineering Program; Earth Fluid Modeling and Prediction Group
Publisher:
Informa UK Limited
Journal:
Journal of Hydraulic Research
Issue Date:
Dec-2014
DOI:
10.1080/00221686.2014.974081
Type:
Article
ISSN:
00221686
Appears in Collections:
Articles; Environmental Science and Engineering Program; Applied Mathematics and Computational Science Program; Physical Sciences and Engineering (PSE) Division; Earth Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorGhostine, Rabihen
dc.contributor.authorHoteit, Ibrahimen
dc.contributor.authorVazquez, Joseen
dc.contributor.authorTerfous, Abdelalien
dc.contributor.authorGhenaim, Abdellahen
dc.contributor.authorMose, Roberten
dc.date.accessioned2015-08-03T12:18:56Zen
dc.date.available2015-08-03T12:18:56Zen
dc.date.issued2014-12en
dc.identifier.issn00221686en
dc.identifier.doi10.1080/00221686.2014.974081en
dc.identifier.urihttp://hdl.handle.net/10754/563902en
dc.description.abstractIn open channel networks, flow is usually approximated by the one-dimensional (1D) Saint-Venant equations coupled with an empirical junction model. In this work, a comparison in terms of accuracy and computational cost between a coupled 1D-2D shallow water model and a fully two-dimensional (2D) model is presented. The paper explores the ability of a coupled model to simulate the flow processes during supercritical flows in crossroads. This combination leads to a significant reduction in the computational time, as a 1D approach is used in branches and a 2D approach is employed in selected areas only where detailed flow information is essential. Overall, the numerical results suggest that the coupled model is able to accurately simulate the main flow processes. In particular, hydraulic jumps, recirculation zones, and discharge distribution are reasonably well reproduced and clearly identified. Overall, the proposed model leads to a 30% reduction in run times. © 2014 International Association for Hydro-Environment Engineering and Research.en
dc.publisherInforma UK Limiteden
dc.subjectCoupled 1D-2D modelen
dc.subjectfinite volumeen
dc.subjectfully 2D modelen
dc.subjectshallow water equationsen
dc.subjectsupercritical flowen
dc.titleComparison between a coupled 1D-2D model and a fully 2D model for supercritical flow simulation in crossroadsen
dc.typeArticleen
dc.contributor.departmentApplied Mathematics and Computational Science Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentEnvironmental Science and Engineering Programen
dc.contributor.departmentEarth Science and Engineering Programen
dc.contributor.departmentEarth Fluid Modeling and Prediction Groupen
dc.identifier.journalJournal of Hydraulic Researchen
dc.contributor.institutionDepartment of Fluid Mechanics, Institut de Mécanique des Fluides et des SolidesStrasbourg, Franceen
dc.contributor.institutionDepartment of Fluid Mechanics, Institut National des Sciences AppliquéesStrasbourg, Franceen
kaust.authorGhostine, Rabihen
kaust.authorHoteit, Ibrahimen
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