Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"Delft3D"”.
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Application des modèles hydrodynamique et de qualité d’eau Delft3D au lac Massawippi
… hydrodynamique en 3D avec l’aide du logiciel Delft3D en a été faite. Pour y arriver, trois stations météorologiques ont été installées autour du lac, et une station gouvernementale installée à Sherbrooke a été utilisée. Ensuite, des mesures d’atrazine et de débit ont été prises dans la rivière …
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SENSITIVITY ANALYSIS OF WATER LEVELS AND WAVES IN THE CARMEL RIVER STATE BEACH TO CHANGING BOUNDARY AND MORPHOLOGICAL CONDITIONS IN DELFT3D: CARMEL RIVER LAGOON
… timescales. This study uses the numerical model Delft3D to assess sensitivities of the processes driving breaching events at the Carmel River State Beach. This sensitivity analysis varies boundary conditions and morphology inputs based on in-situ environmental data from the March 2020 breaching …
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Caratterizzazione morfodinamica della spiaggia del Poetto
… utilized to set up the numerical model. Both the Delft3D-FLOW (Lesser et al., 2004) and Delft3D-WAVE models were used to simulate the hydrodynamics and waves forcing on to Poetto Beach. The main hydrodynamic scenario identified in the area of Poetto Beach was simulated. The results derived from …
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Numerical Modelling of Wind-driven Hydrodynamics in Shallow Wastewater Ponds and Coastal Estuaries
… to validate a high-resolution three-dimensional Delft3D model. Hydrodynamics were primarily wind-driven, with smaller contributions from outflows, and circulation patterns were classified into four hydraulic regimes. Vertical temperature differences of up to 8.0°C over the 1.7 m depth between the …
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Modeling sandbar effects on nearshore waves and morphological change using SWAN
Numerical model simulations (Delft3D SWAN) are used to examine the impact of small alongshore variations in the bathymetry of an outer sandbar (in about 5-m water depth) on the nearshore wave field as the shallow (< 3 m) bathymetry changes from near alongshore uniform to strongly spatially variable …
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Field observations and numerical model simulations of a migrating inlet system
… migrating 2.5 km in ~7 years. A field-verified Delft3D numerical model developed for this system is used to examine the hydrodynamics in the nearshore and their effect on the migrating inlet. An initial numerical experiment showed that the observed 70⁰ tidal modulation of wave direction in the …
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Modeling Sandbar Effects on Nearshore Waves and Morphological Change using SWAN
Numerical model simulations (Delft3D SWAN) are used to examine the impact of small alongshore variations in the bathymetry of an outer sandbar (in about 5-m water depth) on the nearshore wave field as the shallow (< 3 m) bathymetry changes from near alongshore uniform to strongly spatially variable …
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Field observations and numerical model simulations of a migrating inlet system
… migrating 2.5 km in ~7 years. A field-verified Delft3D numerical model developed for this system is used to examine the hydrodynamics in the nearshore and their effect on the migrating inlet. An initial numerical experiment showed that the observed 700 tidal modulation of wave direction in the …
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Seafloor ripples created by waves from Hurricane Ivan on the west Florida shelf
… scientists. These waves were inputted into Delft3D WAVE, incorporating the nearshore wave model SWAN to predict waves at the locations where ripples were measured. Orbital motions at the seabed and grain size were inputted into a time-dependent ripple model with varying dissipation …
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Seafloor ripples created by waves from hurricane Ivan on the west Florida shelf
… scientists. These waves were inputted into Delft3D WAVE, incorporating the nearshore wave model SWAN to predict waves at the locations where ripples were measured. Orbital motions at the seabed and grain size were inputted into a time-dependent ripple model with varying dissipation …
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NUMERICALLY MODELING FLOODING SUSCEPTIBILITY OF THE UNITED STATES NAVAL ACADEMY
… sea level rise will have on the Naval Academy. Delft3D FM was used to create a numerical model of the Severn River, which was then used to simulate environmental conditions during an October 2021 flooding event. Various parameters were altered to test model sensitivities and calibration was …
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From Representative Period Selection to Process‐Based Sediment Dynamics
… to address these gaps. A high-resolution Delft3D-4 model of the NFWS was developed and validated to resolve coupled hydrodynamics and sediment transport. To reduce computational cost, a wind-based method was introduced to identify a representative forcing period from long-term records, …
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Evaluation of New Zealand estuarine water properties using remote sensing
… model included two steps: (1) comparing the Delft3D-derived SSC with corrected satellite data and using K-means classification to categorise the differences into classes; (2) developing a random forest regression model for each class to predict the satellite-derived SSC using Delft3D-derived …
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The gulf of cadiz as a natural laboratory for the validation and exploitation of coastal altimetry and model data
… second specific objective was to implement the Delft3D model in the estuary of the Guadalquivir River and part of the GoC continental shelf with the aim of studying the influence of its discharges on the sea level variability. Details of the Delft3D FLOW module implementation are given in the …
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Modelling of low- and high-frequency sea level variability and their drivers around the southern African coast
… coupled system was developed in a depth-averaged Delft3D FLOW model and Simulating Waves in the Nearshore (SWAN, a.k.a. Delft3d WAVE) spectral wave model. The study is divided into six chapters, each aligned with the physical description of a phenomenon. The hindcast development, assumptions, …
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Hurricane-generated ocean wave propagation and impacts on a fringing reef in Hawai’i
… to develop two numerical models using SWAN and Delft3D-SWAN at different scales to investigate the ocean and coastal responses to the two hurricanes. In the first part of this study, a large-scale model that encompasses the entire Hawaiian Archipelago is developed and the surface waves generated …
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Modelling waves and near-shore circulation around the Cape Peninsula: towards enhanced predictions for South African coastal activities
… I implemented a coupled numerical ocean model (Delft3D FLOW and SWAN), with 700 m horizontal resolution to simulate waves and currents in this area. The model is driven by realistic forcing, striking a previously lacking balance between geographical coverage, spatial granularity, and process …
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The hydrodynamic evolution of the Maketū Estuary after the re-diversion of the Kaituna River
… model of the estuary was developed using Delft3D. After successfully being calibrated and validated, Delft3D-FLOW and PART were used to simulate different scenarios to assess the flow regime and flushing ability of the estuary. The scenarios included Stage 1 re-diversion, river inflow flow …
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Effect of exposure on the erodibility of intertidal mudflats
… semi-empirical models were used to extend a Delft3D numerical model to test the effect of exposure on intertidal mudflat profiles and development of tidal channel networks. Model results indicated that exposure enhanced the more flat-topped shape of intertidal mudflats. Higher air temperature …
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Lagrangian observations and numerical modelling of hydrodynamics, turbulence, and sediment transport in a tidal river
… In particular, I investigate the performance of Delft3D-FLOW in modelling flow speeds, turbulence, and sediment transport along a 15-km stretch of the tidally influenced river in a Lagrangian (flow-following) frame of reference by comparing predictions to a unique Lagrangian dataset which offers …
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