Study on the influence of infiltration on flood propagation with different peak shape coefficients and duration

Traditional flood simulations fail to properly consider the impact of soil infiltration in floodplain areas with high soil infiltration rates. Notably, ignoring soil infiltration will lead to considerable uncertainty in flood simulations. In this paper, a fully hydrodynamic model coupled with the Gr...

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Autores principales:	Jingming Hou, Zhaoan Zhang, Dawei Zhang, Baoshan Shi, Guangzhao Chen, Hongbin Zhang
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	flood propagation green–ampt model hydrodynamic model infiltration inundation area peak shape coefficient River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/c6c66bcf1bf14387ab8c0b91da750008
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spelling	oai:doaj.org-article:c6c66bcf1bf14387ab8c0b91da7500082021-11-05T20:18:27ZStudy on the influence of infiltration on flood propagation with different peak shape coefficients and duration1366-70171996-975910.2166/wp.2021.193https://doaj.org/article/c6c66bcf1bf14387ab8c0b91da7500082021-08-01T00:00:00Zhttp://wp.iwaponline.com/content/23/4/1059https://doaj.org/toc/1366-7017https://doaj.org/toc/1996-9759Traditional flood simulations fail to properly consider the impact of soil infiltration in floodplain areas with high soil infiltration rates. Notably, ignoring soil infiltration will lead to considerable uncertainty in flood simulations. In this paper, a fully hydrodynamic model coupled with the Green–Ampt infiltration model was used. Taking a natural reach in northern China (HTH in this paper) as a case study, observed flood discharge data were used to analyze the influence of soil infiltration on flood propagation based on the flood propagation simulation results for various inflow conditions. The maximum difference of inundation area is about 25%. The results show that soil infiltration has little effect on the inundation area during the rising stage of a flood. In the late period of a flood, the inundation area considering the effect of infiltration is smaller than that without infiltration, and the smaller the peak coefficient is, the longer the flood duration is, the larger the impact of infiltration on the inundation area. When the peak shape coefficient is 0.42 and the flood duration is 44.4 h, the maximum difference of the inundation area is about 28%. The research results provide a reference for flood management and post-disaster rescue efforts. HIGHLIGHTS Using a fully hydrodynamic model coupled with the Green–Ampt model to simulate the flood propagation.; The model uses graphic processing unit acceleration technology.; Analyzing the influence of soil infiltration on flood based on the flood propagation simulation results.; It is considered that the flood peak shape coefficient has influence on infiltration.; The results provide a reference for flood management and post-disaster rescue efforts.;Jingming HouZhaoan ZhangDawei ZhangBaoshan ShiGuangzhao ChenHongbin ZhangIWA Publishingarticleflood propagationgreen–ampt modelhydrodynamic modelinfiltrationinundation areapeak shape coefficientRiver, lake, and water-supply engineering (General)TC401-506ENWater Policy, Vol 23, Iss 4, Pp 1059-1074 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	flood propagation green–ampt model hydrodynamic model infiltration inundation area peak shape coefficient River, lake, and water-supply engineering (General) TC401-506
spellingShingle	flood propagation green–ampt model hydrodynamic model infiltration inundation area peak shape coefficient River, lake, and water-supply engineering (General) TC401-506 Jingming Hou Zhaoan Zhang Dawei Zhang Baoshan Shi Guangzhao Chen Hongbin Zhang Study on the influence of infiltration on flood propagation with different peak shape coefficients and duration
description	Traditional flood simulations fail to properly consider the impact of soil infiltration in floodplain areas with high soil infiltration rates. Notably, ignoring soil infiltration will lead to considerable uncertainty in flood simulations. In this paper, a fully hydrodynamic model coupled with the Green–Ampt infiltration model was used. Taking a natural reach in northern China (HTH in this paper) as a case study, observed flood discharge data were used to analyze the influence of soil infiltration on flood propagation based on the flood propagation simulation results for various inflow conditions. The maximum difference of inundation area is about 25%. The results show that soil infiltration has little effect on the inundation area during the rising stage of a flood. In the late period of a flood, the inundation area considering the effect of infiltration is smaller than that without infiltration, and the smaller the peak coefficient is, the longer the flood duration is, the larger the impact of infiltration on the inundation area. When the peak shape coefficient is 0.42 and the flood duration is 44.4 h, the maximum difference of the inundation area is about 28%. The research results provide a reference for flood management and post-disaster rescue efforts. HIGHLIGHTS Using a fully hydrodynamic model coupled with the Green–Ampt model to simulate the flood propagation.; The model uses graphic processing unit acceleration technology.; Analyzing the influence of soil infiltration on flood based on the flood propagation simulation results.; It is considered that the flood peak shape coefficient has influence on infiltration.; The results provide a reference for flood management and post-disaster rescue efforts.;
format	article
author	Jingming Hou Zhaoan Zhang Dawei Zhang Baoshan Shi Guangzhao Chen Hongbin Zhang
author_facet	Jingming Hou Zhaoan Zhang Dawei Zhang Baoshan Shi Guangzhao Chen Hongbin Zhang
author_sort	Jingming Hou
title	Study on the influence of infiltration on flood propagation with different peak shape coefficients and duration
title_short	Study on the influence of infiltration on flood propagation with different peak shape coefficients and duration
title_full	Study on the influence of infiltration on flood propagation with different peak shape coefficients and duration
title_fullStr	Study on the influence of infiltration on flood propagation with different peak shape coefficients and duration
title_full_unstemmed	Study on the influence of infiltration on flood propagation with different peak shape coefficients and duration
title_sort	study on the influence of infiltration on flood propagation with different peak shape coefficients and duration
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/c6c66bcf1bf14387ab8c0b91da750008
work_keys_str_mv	AT jingminghou studyontheinfluenceofinfiltrationonfloodpropagationwithdifferentpeakshapecoefficientsandduration AT zhaoanzhang studyontheinfluenceofinfiltrationonfloodpropagationwithdifferentpeakshapecoefficientsandduration AT daweizhang studyontheinfluenceofinfiltrationonfloodpropagationwithdifferentpeakshapecoefficientsandduration AT baoshanshi studyontheinfluenceofinfiltrationonfloodpropagationwithdifferentpeakshapecoefficientsandduration AT guangzhaochen studyontheinfluenceofinfiltrationonfloodpropagationwithdifferentpeakshapecoefficientsandduration AT hongbinzhang studyontheinfluenceofinfiltrationonfloodpropagationwithdifferentpeakshapecoefficientsandduration
_version_	1718444064529973248

Study on the influence of infiltration on flood propagation with different peak shape coefficients and duration

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