globalchange  > 气候变化与战略
DOI: 10.5194/hess-23-1567-2019
论文题名:
Technical note: Laboratory modelling of urban flooding: Strengths and challenges of distorted scale models
作者: Li X.; Erpicum S.; Bruwier M.; Mignot E.; Finaud-Guyot P.; Archambeau P.; Pirotton M.; Dewals B.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2019
卷: 23, 期:3
起始页码: 1567
结束页码: 1580
语种: 英语
Scopus关键词: Friction ; Laboratories ; Computational model ; Frictional resistance ; Laboratory experiments ; Laboratory modelling ; Preliminary assessment ; Process understanding ; Secondary currents ; Vertical direction ; Floods ; data set ; flooding ; hydrological modeling ; laboratory method
英文摘要: Laboratory experiments are a viable approach for improving process understanding and generating data for the validation of computational models. However, laboratory-scale models of urban flooding in street networks are often distorted, i.e. different scale factors are used in the horizontal and vertical directions. This may result in artefacts when transposing the laboratory observations to the prototype scale (e.g. alteration of secondary currents or of the relative importance of frictional resistance). The magnitude of such artefacts was not studied in the past for the specific case of urban flooding. Here, we present a preliminary assessment of these artefacts based on the reanalysis of two recent experimental datasets related to flooding of a group of buildings and of an entire urban district, respectively. The results reveal that, in the tested configurations, the influence of model distortion on the upscaled values of water depths and discharges are both of the order of 10%. This research contributes to the advancement of our knowledge of small-scale physical processes involved in urban flooding, which are either explicitly modelled or parametrized in urban hydrology models. © 2019 The Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163013
Appears in Collections:气候变化与战略

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作者单位: Li, X., Hydraulics in Environmental and Civil Engineering (HECE), University of Liège (ULiège), Liège, 4000, Belgium; Erpicum, S., Hydraulics in Environmental and Civil Engineering (HECE), University of Liège (ULiège), Liège, 4000, Belgium; Bruwier, M., Hydraulics in Environmental and Civil Engineering (HECE), University of Liège (ULiège), Liège, 4000, Belgium; Mignot, E., LMFA, CNRS-Université de Lyon, INSA de Lyon, Lyon, 69100, France; Finaud-Guyot, P., ICube Laboratory (UMR 7357), Fluid Mechanics Team, ENGEES, Strasbourg, 67084, France; Archambeau, P., Hydraulics in Environmental and Civil Engineering (HECE), University of Liège (ULiège), Liège, 4000, Belgium; Pirotton, M., Hydraulics in Environmental and Civil Engineering (HECE), University of Liège (ULiège), Liège, 4000, Belgium; Dewals, B., Hydraulics in Environmental and Civil Engineering (HECE), University of Liège (ULiège), Liège, 4000, Belgium

Recommended Citation:
Li X.,Erpicum S.,Bruwier M.,et al. Technical note: Laboratory modelling of urban flooding: Strengths and challenges of distorted scale models[J]. Hydrology and Earth System Sciences,2019-01-01,23(3)
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