A Richards’ equation-based model for wave-resolving simulation of variably-saturated beach groundwater flow dynamics
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F23%3A00371627" target="_blank" >RIV/68407700:21220/23:00371627 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.1016/j.jhydrol.2023.129344" target="_blank" >https://doi.org/10.1016/j.jhydrol.2023.129344</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jhydrol.2023.129344" target="_blank" >10.1016/j.jhydrol.2023.129344</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
A Richards’ equation-based model for wave-resolving simulation of variably-saturated beach groundwater flow dynamics
Popis výsledku v původním jazyce
This study introduces a model based on Richards' equation to describe variably-saturated beach groundwater flow. The surface wave propagation is computed by the phase-resolving non-hydrostatic SWASH code. The SWASH data are used to make a suitable dynamic boundary condition at the beach face to force Richards' equation. The latter is solved by a weighted discontinuous Galerkin method together with adaptive mesh refinement. The model is validated by comparison with a laboratory experiment of a transient water table recharge problem. Then, the BARDEX II prototype-scale experiment is considered to assess the model abilities for beach groundwater dynamics. The barrier beach is studied for three cases with different lagoon levels. Steady-state results with no-wave conditions show excellent agreement. Transient waves simulations are evaluated in terms of pressure heads, saturations, water table position and groundwater velocities for time-averaged, swash-resolving and spectral analysis. Results bring interesting insights about beach groundwater modelling by comparison with the experimental data as well as a Darcy's equation-based model. A first investigation is carried out to assess the groundwater effect on the bed sediment dynamics through the modification of sediment relative weight.
Název v anglickém jazyce
A Richards’ equation-based model for wave-resolving simulation of variably-saturated beach groundwater flow dynamics
Popis výsledku anglicky
This study introduces a model based on Richards' equation to describe variably-saturated beach groundwater flow. The surface wave propagation is computed by the phase-resolving non-hydrostatic SWASH code. The SWASH data are used to make a suitable dynamic boundary condition at the beach face to force Richards' equation. The latter is solved by a weighted discontinuous Galerkin method together with adaptive mesh refinement. The model is validated by comparison with a laboratory experiment of a transient water table recharge problem. Then, the BARDEX II prototype-scale experiment is considered to assess the model abilities for beach groundwater dynamics. The barrier beach is studied for three cases with different lagoon levels. Steady-state results with no-wave conditions show excellent agreement. Transient waves simulations are evaluated in terms of pressure heads, saturations, water table position and groundwater velocities for time-averaged, swash-resolving and spectral analysis. Results bring interesting insights about beach groundwater modelling by comparison with the experimental data as well as a Darcy's equation-based model. A first investigation is carried out to assess the groundwater effect on the bed sediment dynamics through the modification of sediment relative weight.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10102 - Applied mathematics
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2023
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Hydrology
ISSN
0022-1694
e-ISSN
1879-2707
Svazek periodika
619
Číslo periodika v rámci svazku
129344
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
20
Strana od-do
—
Kód UT WoS článku
000950781300001
EID výsledku v databázi Scopus
2-s2.0-85150845827