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| Titel |
A simple 2-D inundation model for incorporating flood damage in urban drainage planning |
| VerfasserIn |
A. Pathirana, S. Tsegaye, B. Gersonius, K. Vairavamoorthy |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 15, no. 8 ; Nr. 15, no. 8 (2011-08-31), S.2747-2761 |
| Datensatznummer |
250012939
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| Publikation (Nr.) |
 copernicus.org/hess-15-2747-2011.pdf |
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| Zusammenfassung |
| An urban inundation model was developed and coupled with 1-D drainage network model (EPA-SWMM5). The objective was to achieve a 1-D/2-D coupled model that is
simple and fast enough to be consistently used in planning stages of urban
drainage projects. The 2-D inundation model is based on a non-standard simplification of the shallow water
equation, lays between diffusion-wave and full dynamic models.
Simplifications were made in the process representation and numerical
solving mechanisms and a depth scaled Manning coefficient was introduced to
achieve stability in the cell wetting-drying process. The 2-D model is coupled
with SWMM for simulation of both network flow and surcharge induced
inundation. The coupling is archived by mass transfer from the network system
to the 2-D system. A damage calculation block is integrated within the model
code for assessing flood damage costs in optimal planning of urban drainage
networks. The model is stable in dealing with complex flow conditions, and
cell wetting/drying processes, as demonstrated by a number of idealised
experiments. The model application is demonstrated by applying to a case
study in Brazil. |
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