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Improved Building Treatment Approach for Urban Inundation Modeling: A Case Study in Wuhan, China

1
School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
2
School of Accounting, Zhongnan University of Economics and Law, Wuhan 430073, China
3
Power China Hubei Electric Engineering Corporation, Wuhan 430040, China
*
Author to whom correspondence should be addressed.
Water 2018, 10(12), 1760; https://doi.org/10.3390/w10121760
Received: 15 August 2018 / Revised: 19 November 2018 / Accepted: 28 November 2018 / Published: 30 November 2018
(This article belongs to the Section Urban Water Management)
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PDF [10070 KB, uploaded 30 November 2018]
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Abstract

This paper describes an improved building treatment approach (IBTA) for use in urban inundation modeling. In this approach, the ground surface elevation was raised by the threshold (h) of the building entrance height to account for both the blockage and storage effect of areas with dense building coverage. A higher roughness coefficient was assigned to the areas where buildings were located to compensate for the resistance effects caused by the inner wall of the structure. The campus of Huazhong University of Science and Technology (HUST) in Wuhan City, China, was used as a case study. Comparison between IBTA and several traditional building treatment approaches suggested that the model results were sensitive to the building treatment method and the threshold used for terrain preprocessing in dense building regions. Furthermore, as the interaction between the surface water flow and dense buildings were adequately represented by using a new terrain preprocessing approach, the proposed IBTA provided better performance in terms of maximum inundation depth and the peak depth time than the traditional approaches in areas with dense building coverage, such as that of the campus. View Full-Text
Keywords: building treatment approach; urban inundation modeling; terrain preprocessing; building effect; sensitivity analysis building treatment approach; urban inundation modeling; terrain preprocessing; building effect; sensitivity analysis
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Shen, J.; Tan, F.; Zhang, Y. Improved Building Treatment Approach for Urban Inundation Modeling: A Case Study in Wuhan, China. Water 2018, 10, 1760.

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