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Comparison between curvilinear and rectilinear grid based hydraulic models for river flow simulation

Morianou Giasemi, Kourgialas Nektarios, Karatzas Georgios

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URIhttp://purl.tuc.gr/dl/dias/D55D3461-6F14-4D6E-907E-9CF3F15F3960-
Identifierhttps://www.sciencedirect.com/science/article/pii/S1877705816334117?via%3Dihub-
Identifierhttps://doi.org/10.1016/j.proeng.2016.11.102-
Languageen-
Extent8 pagesen
TitleComparison between curvilinear and rectilinear grid based hydraulic models for river flow simulationen
CreatorMorianou Giasemien
CreatorΜοριανου Γιασεμηel
CreatorKourgialas Nektariosen
CreatorΚουργιαλας Νεκταριοςel
CreatorKaratzas Georgiosen
CreatorΚαρατζας Γεωργιοςel
PublisherElsevieren
Content SummaryIn the present work, the two-dimensional hydraulic models MIKE 21 and MIKE 21C were used in order to simulate the water depth at the downstream section of the Koiliaris River Basin in Crete-Greece. Specifically, an important goal of the present study was the comparison of the widely used MIKE 21 with the MIKE 21C model. The MIKE 21C model has been developed specifically to simulate 2D flows and morphological changes in rivers. It is based on an orthogonal curvilinear grid and 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 sediment transport. In contrast to model MIKE 21C, the general version of MIKE 21 is based on a rectilinear grid. 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 results of the two models were compared with field observations and a series of statistical indicators. It was concluded that the curvilinear grid based model results were in better agreement with the field measurements.en
Type of ItemΠλήρης Δημοσίευση σε Συνέδριοel
Type of ItemConference Full Paperen
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2018-10-26-
Date of Publication2016-
SubjectCurvilinear griden
SubjectMIKE 21 modelen
SubjectMIKE 21C modelen
SubjectRectilinear griden
Bibliographic CitationG. G. Morianou, N. N. Kourgialas and G. P. Karatzas, "Comparison between curvilinear and rectilinear grid based hydraulic models for river flow simulation," in 2nd International Conference on Efficient and Sustainable Water Systems Management Toward Worth Living Development, 2016, pp. 568-575. doi: 10.1016/j.proeng.2016.11.102en

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