Subgrid corrections in finite-element modeling of storm-driven coastal flooding
Subgrid corrections in finite-element modeling of storm-driven coastal flooding
复制标题
风暴驱动的沿海洪水有限元建模中的亚网格修正
DOI:
10.1016/j.ocemod.2021.101887
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发表时间:
2021
期刊:
影响因子:
3.2
通讯作者:
Kolar, R.L.
中科院分区:
文献类型:
--
作者:
Woodruff, Johnathan L.;Dietrich, J.C.;Wirasaet, D.;Kennedy, A.B.;Bolster, D.;Silver, Z.;Medlin, S.D.;Kolar, R.L.
Coastal flooding models are used to predict the timing and magnitude of inundation during storms, both for real-time forecasting and long-term design. However, there is a need for faster flooding predictions that also represent flow pathways and barriers at the scales of critical infrastructure. This need can be addressed via subgrid corrections, which use information at smaller scales to ‘correct’ the flow variables (water levels, current velocities) averaged over the mesh scale. Recent studies have shown a decrease in run time by 1 to 2 orders of magnitude, with the ability to decrease further if the model time step is also increased.In this study, subgrid corrections are added to a widely used, finite-element-based, shallow water model to better understand how they can improve the accuracy and efficiency of inundation predictions. The performance of the model, with and without subgrid corrections, is evaluated on scenarios of tidal flooding in a synthetic domain and a small bay in Massachusetts, as well as a scenario with a real atmospheric forcing and storm surge in southwest Louisiana. In these tests we observed that the subgrid corrections can increase model speed by 10 to 50 times, while still representing flow through channels below the mesh scale to inland locations.
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DOI:
10.2307/2008784
发表时间:
1985-12
期刊:
--
影响因子:
--
作者:
Ingemar Kinnmark
通讯作者:
Ingemar Kinnmark
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
C. Dick;E. Tromble;K. Dresback;R. Kolar
通讯作者:
R. Kolar
影响因子:
4.1
作者:
C. Berenbrock;R.R. Mason, Jr.;S. F. Blanchard
通讯作者:
S. F. Blanchard
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:
1985
期刊:
影响因子:
--
作者:
S. Whitaker
通讯作者:
S. Whitaker