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River flow and sediment transport simulation based on a curvilinear and rectilinear grid modelling approach - a comparison study

Morianou Giasemi, Kourgialas Nektarios, Karatzas Giorgos, Nikolaidis Nikolaos

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URIhttp://purl.tuc.gr/dl/dias/D16E167D-6CCF-42B7-BDFE-DCD31C00F730-
Identifierhttp://ws.iwaponline.com/content/17/5/1325-
Identifierhttps://doi.org/10.2166/ws.2017.031-
Languageen-
Extent10 pagesen
TitleRiver flow and sediment transport simulation based on a curvilinear and rectilinear grid modelling approach - a comparison studyen
CreatorMorianou Giasemien
CreatorΜοριανου Γιασεμηel
CreatorKourgialas Nektariosen
CreatorΚουργιαλας Νεκταριοςel
CreatorKaratzas Giorgosen
CreatorΚαρατζας Γιωργοςel
CreatorNikolaidis Nikolaosen
CreatorΝικολαιδης Νικολαοςel
PublisherIWA Publishingen
Content SummaryIn the present work, a two-dimensional (2D) hydraulic model was used for the simulation of river flow and sediment transport in the downstream section of the Koiliaris River Basin in Crete, Greece, based on two different structured grids. Specifically, an important goal of the present study was the comparison of a curvilinear grid model with a rectilinear grid model. The MIKE 21C model has been developed to simulate 2D flows and morphological changes in rivers by using either an orthogonal curvilinear grid or a rectilinear grid. The MIKE 21C model comprises two parts: (a) the hydrodynamic part that is based on the Saint-Venant equations and (b) the morphological change part for the simulation of bank erosion and sediment transport. The difference between the curvilinear and the rectilinear grid is that the curvilinear grid lines follow the bank lines of the river, providing a better resolution of the flow near the boundaries. The water depth and sediment results obtained from the simulations for the two different grids were compared with field observations and a series of statistical indicators. It was concluded that the curvilinear grid model results were in better agreement with the field measurements. en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2018-03-28-
Date of Publication2017-
SubjectCurvilinear griden
SubjectMIKE 21C modelen
SubjectRectilinear griden
SubjectRiver flowen
SubjectSediment transporten
Bibliographic CitationG. G. Morianou, N. N. Kourgialas, G. P. Karatzas and N. P Nikolaidis, "River flow and sediment transport simulation based on a curvilinear and rectilinear grid modelling approach - a comparison study," Wa. Sci. Technol., vol. 17, no. 5, pp. 1325-1334, Oct. 2017. doi: 10.2166/ws.2017.03en

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