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| Titel |
CFD modelling approach for dam break flow studies |
| VerfasserIn |
C. Biscarini, S. Francesco, P. Manciola |
| 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 ; 14, no. 4 ; Nr. 14, no. 4 (2010-04-27), S.705-718 |
| Datensatznummer |
250012271
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| Publikation (Nr.) |
 copernicus.org/hess-14-705-2010.pdf |
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| Zusammenfassung |
This paper presents numerical simulations of free surface flows induced by a
dam break comparing the shallow water approach to fully three-dimensional
simulations. The latter are based on the solution of the complete set of
Reynolds-Averaged Navier-Stokes (RANS) equations coupled to the Volume of
Fluid (VOF) method.
The methods assessment and comparison are carried out on a dam break over a
flat bed without friction, a dam break over a triangular bottom sill and a
dam break flow over a 90° bend. Experimental and numerical
literature data are compared to present results.
The results demonstrate that the shallow water approach, even if able to
sufficiently reproduce the main aspects of the fluid flows, loses some
three-dimensional phenomena, due to the incorrect shallow water idealization
that neglects the three-dimensional aspects related to the gravity force. |
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