Development and Comparison of Two Fast Surrogate Models for Urban Pluvial Flood Simulations

María Bermúdez (), Victor Ntegeka, Vincent Wolfs and Patrick Willems
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María Bermúdez: KU Leuven
Victor Ntegeka: KU Leuven
Vincent Wolfs: KU Leuven
Patrick Willems: KU Leuven

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2018, vol. 32, issue 8, No 15, 2815 pages

Abstract: Abstract Detailed full hydrodynamic 1D-2D dual drainage models are a well-established approach to simulate urban pluvial floods. However, despite modelling advances and increasing computational power, this approach remains unsuitable for many real time applications. We propose and test two computationally efficient surrogate models. The first approach links a detailed 1D sewer model to a GIS-based overland flood network. For the second approach, we developed a conceptual sewer and flood model using data-driven and physically based structures, and coupled the model to pre-simulated flood maps. The city of Ghent (Belgium) is used as a test case. Both surrogate models can provide comparable results to the original model in terms of peak surface flood volumes and maximum flood extent and depth maps, with a significant reduction in computing time.

Keywords: Computational hydraulics; Surrogate modelling; Pluvial flooding; Urban drainage model; Urban flooding (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (6)

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DOI: 10.1007/s11269-018-1959-8

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