Flooding flows in city crossroads: experiments and 1-D modelling
| Autor: | Richard J. Perkins, Nicolas Riviere, A. Lecus, Bernard Chocat |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Engineering
Environmental Engineering Rain Poison control flow junction Physics::Fluid Dynamics Disasters Water Movements Computer Simulation Cities Shallow water equations subcritical flow Water Science and Technology geography geography.geographical_feature_category business.industry Total flow Environmental engineering experiments Mechanics Models Theoretical Supercritical flow Inlet Urban drainage Volumetric flow rate Flooding (computer networking) Research Design Weir simulations business |
| Zdroj: | Water Science and Technology. 54:75-82 |
| ISSN: | 1996-9732 0273-1223 |
| DOI: | 10.2166/wst.2006.603 |
| Popis: | This study focuses on the discharge distribution in an intersection of four channels, similar to a city crossroad. The channels and the intersection are all horizontal. Flow enters through two of the channels, and leaves through the other two. The flow is subcritical everywhere, and flow depths are controlled by vertical weirs at the exits of the outlet channels. The main variables that are measured are the flow rates in the four channels. When the weir heights in the outlet channels are the same, the ratio of flow rates in the outlet channels depends only on the ratio of flow rates in the inlet channels; if the outlet conditions are different, other parameters, such as the total flow rate also become important. The flow has also been simulated numerically using a solution of the 1-D Saint Venant equations, with a simple model to predict flow distribution in the intersection. A comparison with the experimental data shows that this model works well for the limited range of experimental conditions studied here. However, further work is needed on a wider range of conditions, closer to real conditions, before the model can be considered valid for practical applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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