Subgrid surface connectivity for storm surge modeling
Subgrid surface connectivity for storm surge modeling
复制标题
用于风暴潮建模的子网格表面连接
DOI:
10.1016/j.advwatres.2021.103939
复制
发表时间:
2021
影响因子:
4.7
通讯作者:
Dietrich, J.C.
中科院分区:
文献类型:
--
作者:
Begmohammadi, Amirhosein;Wirasaet, Damrongsak;Silver, Zachariah;Bolster, Diogo;Kennedy, Andrew B.;Dietrich, J.C.
Subgrid modeling to account for unresolved topography within the context of shallow water equations relies on the use of coarse grids for computational efficiency. However, excessively coarse grids can lead to artificial cross flows between hydrologically disconnected areas separated by physical barriers smaller than the grid size. An approach based on introducing cell and edge clones, consisting of connected groups of pixels in each cell, is able to systematically remove such artificial cross flows. Such an approach considers that the subgrid barriers permanently divide flow among clones and effectively restrict flow to a predetermined path. In this work, a simple algorithm, along with the use of an overtopping formula, is proposed to extend the clone approach to a scenario in which clones are allowed to be further split and merged as needed, depending on the surface elevation during a given runtime. The algorithm is intended for accommodating the possibility of the subgrid barriers being inundated and no-longer dividing the flow during an extreme event. The performance of the proposed algorithm is demonstrated through a series of idealized and more realistic test cases, showing considerable improvements over existing methodologies.
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影响因子:
4.7
作者:
Zhi Li;B. Hodges
通讯作者:
B. Hodges
DOI:
--
发表时间:
1957
期刊:
影响因子:
--
作者:
Carl E. Kindsvater;R. W. Carter
通讯作者:
R. W. Carter
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
J. Danielson;S. Poppenga;Dean J. Tyler;M. Palaseanu;D. Gesch
通讯作者:
D. Gesch
影响因子:
3.2
作者:
A. Kennedy;D. Wirasaet;A. Begmohammadi;Thomas Sherman;D. Bolster;J. Dietrich
通讯作者:
A. Kennedy;D. Wirasaet;A. Begmohammadi;Thomas Sherman;D. Bolster;J. Dietrich
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
B. Hodges
通讯作者:
B. Hodges