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Porosity Models for Large-Scale Urban Flood Modelling: A Review

Research unit Urban & Environmental Engineering (UEE), Hydraulics in Environmental and Civil Engineering (HECE), University of Liège, 4000 Liège, Belgium
Author to whom correspondence should be addressed.
Academic Editors: James Shucksmith and Jorge Leandro
Water 2021, 13(7), 960;
Received: 24 February 2021 / Revised: 23 March 2021 / Accepted: 26 March 2021 / Published: 31 March 2021
(This article belongs to the Special Issue Modelling of Floods in Urban Areas)
In the context of large-scale urban flood modeling, porosity shallow-water models enable a considerable speed-up in computations while preserving information on subgrid topography. Over the last two decades, major improvements have been brought to these models, but a single generally accepted model formulation has not yet been reached. Instead, existing models vary in many respects. Some studies define porosity parameters at the scale of the computational cells or cell interfaces, while others treat the urban area as a continuum and introduce statistically defined porosity parameters. The porosity parameters are considered either isotropic or anisotropic and depth-independent or depth-dependent. The underlying flow models are based either on the full shallow-water equations or approximations thereof, with various flow resistance parameterizations. Here, we provide a review of the spectrum of porosity models developed so far for large-scale urban flood modeling. View Full-Text
Keywords: urban flood modeling; porosity; shallow-water model urban flood modeling; porosity; shallow-water model
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MDPI and ACS Style

Dewals, B.; Bruwier, M.; Pirotton, M.; Erpicum, S.; Archambeau, P. Porosity Models for Large-Scale Urban Flood Modelling: A Review. Water 2021, 13, 960.

AMA Style

Dewals B, Bruwier M, Pirotton M, Erpicum S, Archambeau P. Porosity Models for Large-Scale Urban Flood Modelling: A Review. Water. 2021; 13(7):960.

Chicago/Turabian Style

Dewals, Benjamin, Martin Bruwier, Michel Pirotton, Sebastien Erpicum, and Pierre Archambeau. 2021. "Porosity Models for Large-Scale Urban Flood Modelling: A Review" Water 13, no. 7: 960.

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