A New Method for Wet-Dry Front Treatment in Outburst Flood Simulation

doi:10.3390/w13020221

	A New Method for Wet-Dry Front Treatment in Outburst Flood Simulation
	Liu, Dingzhu 2,3,4; Tang, Jinbo 2,3; Wang, Hao 5; Cao, Yang 6; Bazai, Nazir Ahmed 2,3; Chen, Huayong 2,3; Liu, Daochuan 1
刊名	WATER
	2021
卷号	13 期号:2 页码:16
关键词	shallow water equations wet-dry front outburst flood TVD-scheme MUSCL-Hancock method
DOI	10.3390/w13020221
通讯作者	Wang, Hao(hgoodspeed2008@163.com)
英文摘要	When utilizing a finite volume method to predict outburst flood evolution in real geometry, the processing of wet-dry front and dry cells is an important step. In this paper, we propose a new approach to process wet-dry front and dry cells, including four steps: (1) estimating intercell properties; (2) modifying interface elevation; (3) calculating dry cell elevations by averaging intercell elevations; and (4) changing the value of the first term of slope limiter based on geometry in dry cells. The Harten, Lax, and van Leer with the contact wave restored (HLLC) scheme was implemented to calculate the flux. By combining the MUSCL (Monotone Upstream-centred Scheme for Conservation Laws)-Hancock method with the minmod slope limiter, we achieved second-order accuracy in space and time. This approach is able to keep the conservation property (C-property) and the mass conservation of complex bed geometry. The results of numerical tests in this study are consistent with experimental data, which verifies the effectiveness of the new approach. This method could be applied to acquire wetting and drying processes during flood evolution on structured meshes. Furthermore, a new settlement introduces few modification steps, so it could be easily applied to matrix calculations. The new method proposed in this study can facilitate the simulation of flood routing in real terrain.
资助项目	National Natural Science Foundation of China[41941017] ; Applied Fundamental Research Program of Sichuan Province[2019JY0387] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDY-SSWDQC006] ; National Natural Science Foundation of China
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
语种	英语
出版者	MDPI
WOS记录号	WOS:000611759100001
资助机构	National Natural Science Foundation of China ; Applied Fundamental Research Program of Sichuan Province ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/136465]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Hao
作者单位	1.Sichuan Highway Planning Survey Design & Res Inst, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 6.Chengdu Univ Technol, Engn & Tech Coll, Leshan 614000, Peoples R China
推荐引用方式 GB/T 7714	Liu, Dingzhu,Tang, Jinbo,Wang, Hao,et al. A New Method for Wet-Dry Front Treatment in Outburst Flood Simulation[J]. WATER,2021,13(2):16.
APA	Liu, Dingzhu.,Tang, Jinbo.,Wang, Hao.,Cao, Yang.,Bazai, Nazir Ahmed.,...&Liu, Daochuan.(2021).A New Method for Wet-Dry Front Treatment in Outburst Flood Simulation.WATER,13(2),16.
MLA	Liu, Dingzhu,et al."A New Method for Wet-Dry Front Treatment in Outburst Flood Simulation".WATER 13.2(2021):16.