NDLI: Computing flooding of crossroads with obstacles using a 2D numerical model

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Computing flooding of crossroads with obstacles using a 2D numerical model

Content Provider	Scilit
Author	Bazin, Pierre-Henri Mignot, Emmanuel Paquier, Andre
Copyright Year	2016
Description	Urban flood flow characteristics are usually computed using two-dimensional numerical models. How such modelling can be implemented in dense urban areas with obstacles is investigated in this paper. A strategy for representing the effect of urban obstacles in various flow conditions is proposed. The comparison between the available laboratory measurements and the model results show that if the water depth is high enough and the flow remains subcritical, two-dimensional modelling with constant eddy viscosity represents the effect of the obstacles on the flow distribution accurately, even with a coarse mesh. In contrast, if the water depth is low and/or the flow becomes supercritical, the description of the flow is not sufficient and it generates errors in the flow distribution at the crossroads.
Related Links	https://hal.archives-ouvertes.fr/hal-01724983/file/BazinObstacle.pdf
Ending Page	84
Page Count	13
Starting Page	72
ISSN	00221686
e-ISSN	18142079
DOI	10.1080/00221686.2016.1217947
Journal	Journal of Hydraulic Research
Issue Number	1
Volume Number	55
Language	English
Publisher	Informa UK Limited
Publisher Date	2017-01-02
Access Restriction	Open
Subject Keyword	Journal: Journal of Hydraulic Research Flood Modelling Flow–structure Interaction Junction Flow Two-dimensional Models Urban Flooding
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Civil and Structural Engineering

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