Journal of Hydrology, Год журнала: 2024, Номер unknown, С. 132625 - 132625
Опубликована: Дек. 1, 2024
Язык: Английский
BAREKENG JURNAL ILMU MATEMATIKA DAN TERAPAN, Год журнала: 2025, Номер 19(1), С. 643 - 654
Опубликована: Янв. 13, 2025
Groyne is very important to protect the coastline with concept of maintaining balance sediment transport. building in theory can work well if worked groups or more than one. In this study, Passo beach location was chosen because there an existing groyne that, seen on Google Earth, has been damaged by scattering constituent rocks. If cannot transport, it may occur that mass destruction infrastructure behind itself, such as regional roads, occur. To find out level damage, in-depth study needs be carried out. paper, Delft-3D mathematical modeling investigate damage looking at performance transport area. Hydrodynamic and coastal analyses were wet dry season conditions. Modeling over one month a morphology factor 12 obtain for year. conditions, shows observation point, erosion 2 meters, balanced. It implied structure must replaced being surpass lifetime.
Язык: Английский
Процитировано
0
Journal of Geographical Sciences, Год журнала: 2025, Номер 35(3), С. 577 - 597
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
0
IOP Conference Series Earth and Environmental Science, Год журнала: 2025, Номер 1479(1), С. 012018 - 012018
Опубликована: Апрель 1, 2025
Abstract Bengkalis Island is located on the outer border of Indonesia and faces Malacca Strait. The northwest part island, which predominantly composed peat soil, was most severely affected by erosion. condition particularly frequent during periods high rainfall intensity due to climate change. This has caused landslide towards sea, triggered land instability use changes sediment transport in nearshore area. Understanding needed as a base design proper coastal protection. To address this phenomenon, we investigate model pattern along west coast low wave season using coupled flow Delft3D software. uses bathymetry data from BATNAS, waves wind ERA-5, TPXO global tides, properties secondary data. Model verification conducted tides recording Geospatial Information Agency (BIG) field survey Yamaguchi University Riau University. By examining two cases, it found that edge more prone erosion, whereas southern side island likely experience sedimentation, even if erosion also happens there low-wave season. Furthermore, hydrodynamic conditions waters surrounding it, contribute landslides are considered selecting suitable Nature-based Solution (NbS) for
Язык: Английский
Процитировано
0
Water, Год журнала: 2025, Номер 17(3), С. 386 - 386
Опубликована: Янв. 31, 2025
The prediction of tidal fields is crucial in coastal and marine hydrodynamic analyses, particularly complex environments, as it plays an essential role disaster warning fisheries management. However, monitoring the entire field impractical, harmonic analysis numerical simulation methods continue to face challenges accuracy efficiency for large-scale predictions. To address these issues, this paper proposes a method based on Long Short-Term Memory (LSTM) networks. A physics-based model established, validated using observational data from multiple sites study area. quantified performance indicators such root mean square error (RMSE) correlation coefficients. then used generate high-quality comprehensive dataset. An LSTM-based developed predict semi-closed bay. compared with models Transformer, Random Forest, KNN regression methods. results demonstrate that surpasses other machine learning accuracy, notable advantage handling time series data. This introduces new ideas technical approaches rapid prediction, overcoming limitations traditional providing robust support prevention, resource management, environmental protection.
Язык: Английский
Процитировано
0
Journal of Hydrology, Год журнала: 2025, Номер unknown, С. 132785 - 132785
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
0
CATENA, Год журнала: 2025, Номер 250, С. 108729 - 108729
Опубликована: Фев. 5, 2025
Язык: Английский
Процитировано
0
Regional Studies in Marine Science, Год журнала: 2025, Номер unknown, С. 104095 - 104095
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
0
Engineering Applications of Computational Fluid Mechanics, Год журнала: 2024, Номер 18(1)
Опубликована: Март 12, 2024
In this paper, we revisit the classical energy transport equation for pure tidal flows in estuaries by including effects of residual water level and freshwater discharge. Starting from one-dimensional mass momentum conservations, derive analytical expressions flux its dissipation, which can be used to explore interaction between tide river an perspective. It has been shown that potential is dominant over kinetic flux, contribution made tide-river negligible compared with due flow A critical position corresponding zero identified, reflecting a balance along-channel amplitude level. Assuming variation system tends zero, long-term equilibrium bed profile convex-up shape, where identify location second estuarine turbidity maximum (ETM) at determined river- tide-induced flux. The dynamic response propagation extent are adjust reflect seasonal changes towards formation equilibrium.
Язык: Английский
Процитировано
3
Engineering Applications of Computational Fluid Mechanics, Год журнала: 2024, Номер 18(1)
Опубликована: Июнь 18, 2024
Sediment scour numerical simulation plays a critical role in the design of water-resistant foundation engineering, and this paper addresses significant gap most related studies, which often overlook transformation sediment struggle to identify actual riverbed obscured by yielding bed suspended load. To tackle challenge, comprehensive model based on meshless Smoothed Particle Hydrodynamics (SPH) method was developed. Firstly, enhance computational efficiency mitigate high cost Fluid-Solid Interaction (FSI) between water sediments, cohesionless grains were modelled as non-Newtonian fluids, with yield strength determined according combined criterion. Subsequently, identification particle velocity shear stress, seepage force driving motion at interface. The effectiveness validated through comparison three experiments. results show better agreement experimental data, root-mean-square error less than 2.17% morphology successful post-scouring surface each case. However, free still exhibits slight error, 8.35%.
Язык: Английский
Процитировано
2
Engineering Applications of Computational Fluid Mechanics, Год журнала: 2024, Номер 18(1)
Опубликована: Ноя. 4, 2024
Coastal reservoirs (CRs) are important water resources worldwide, but environmental problems can arise due to limited material mixing caused by the blocked propagation of tidal waves. The Saemangeum Reservoir is a large brackish reservoir in South Korea; owing its complex fluctuation characteristics, accurate reproduction three-dimensional (3D) circulation and distribution characteristics remains challenge. Here, we aimed improve reproducibility Delft3D model through long-term precision monitoring analyze occurring CRs. reproduced hydraulic flow stratification phenomena Richardson number (Ri) was higher than 100, Stratification Index (SI) 1 density difference between surface bottom layers. strength was, therefore, considered high. Moreover, two-layer occurred eddy horizontal gradient salinity. When sluice gate expanded, area days where hypoxia decreased. It would also mitigate retention materials circulation. findings this study be used as foundational data for solving managing within
Язык: Английский
Процитировано
0