Modelling Infiltration Process, Overland Flow and Sewer System Interactions for Urban Flood Mitigation
| Autor: | Arlex Sanchez, Roland K. Price, Zoran Vojinovic, Carlos Martínez |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
010504 meteorology & atmospheric sciences
Geography Planning and Development 0207 environmental engineering Hydrograph 02 engineering and technology Aquatic Science infiltration 01 natural sciences Biochemistry overland flow Flood mitigation Drainage 020701 environmental engineering TD201-500 0105 earth and related environmental sciences Water Science and Technology Hydrology Water supply for domestic and industrial purposes Flood myth 1D/2D coupled modelling urban flood modelling Hydraulic engineering Storm Water Management Model Green-Ampt method Infiltration (hydrology) Environmental science Outflow TC1-978 Surface runoff |
| Zdroj: | Water Volume 13 Issue 15 Water, Vol 13, Iss 2028, p 2028 (2021) |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w13152028 |
| Popis: | Rainfall-runoff transformation on urban catchments involves physical processes governing runoff production in urban areas (e.g., interception, evaporation, depression, infiltration). Some previous 1D/2D coupled models do not include these processes. Adequate representation of rainfall–runoff–infiltration within a dual drainage model is still needed for practical applications. In this paper we propose a new modelling setup which includes the rainfall–runoff–infiltration process on overland flow and its interaction with a sewer network. We first investigated the performance of an outflow hydrograph generator in a 2D model domain. The effect of infiltration losses on the overland flow was evaluated through an infiltration algorithm added in a so-called Surf-2D model. Then, the surface flow from a surcharge sewer was also investigated by coupling the Surf-2D model with the SWMM 5.1 (Storm Water Management Model). An evaluation of two approaches for representing urban floods was carried out based on two 1D/2D model interactions. Two test cases were implemented to validate the model. In general, similar results in terms of peak discharge, water depths and infiltration losses against other 1D/2D models were observed. The results from two 1D/2D model interactions show significant differences in terms of flood extent, maximum flood depths and inundation volume. |
| Databáze: | OpenAIRE |
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