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The Smoothed Particle Hydrodynamics (SPH) method is proposed for studying hydrodynamic processes related to nuclear engineering problems. A problem of possible recriticality due to the sloshing motions of the molten reactor core is studied with SPH method. The accuracy of the numerical solution obtained in this study with the SPH method is significantly higher than that obtained with the SIMMER-III/IV reactor safety analysis code.

CFD --- Sloshing --- Recriticality --- SPH --- Free Surface Flows

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In this master thesis, a 2D/3D free surface flow solver based on the PFEM method is developed. While an existing 2D implicit incompressible solver developed in a previous work by Marco-Lucio Cerquaglia is available at the MTFC and MN2L lab of Uliège, an explicit solver is developed especially in the goal of simulating 3D flows efficiently. To do so, the incompressible Navier-Stokes equations are replaced by weakly-compressible Navier-Stokes equations using a Tait-Murnaghan equation of state. The Computational Geometry Algorithms Library (CGAL) is used to handle everything related to Delaunay triangulation and alpha-shapes algorithm in 2D and 3D. The simulations results are then compared to analytical solutions and to Cerquaglia’s solver. The solvers seems able to correctly represent flow not to far from incompressibility, and 3D simulations are working.

PFEM --- CGAL --- GMSH --- c++ --- free surface flows --- fluid simulations --- Ingénierie, informatique & technologie > Multidisciplinaire, généralités & autres

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This Special Issue aims to provide a forum for the latest advances in hydraulic modeling based on the use of shallow water and related models as well as their novel application in practical engineering. Original contributions, including those in but not limited to the following areas, will be considered for publication: new conceptual models and applications, flood inundation and routing, sediment transport and morphodynamic modelling, pollutant transport in water, irrigation and drainage modeling, numerical simulation in hydraulics, novel numerical methods for the shallow water equations and extended models, case studies, and high-performance computing.

central-upwind --- efficiency --- finite volume --- HLLC --- modern hardware --- Roe --- shallow water equations --- vectorization --- fluvial process --- bank vegetation --- channel pattern --- 2D numerical model --- two-dimensional hydrodynamic model --- local time stepping --- unstructured grids --- numerical simulation --- computational efficiency --- west coast of Korea (WCK) --- tidal elevation --- open boundary condition --- numerical modeling --- TELEMAC-2D --- hydraulic jump --- Boussinesq equations --- MacCormack --- Dissipative two-four --- method of specified intervals --- shallow water --- CasADi --- fast computation --- 1-D --- reservoir model --- PID regulation --- free surface flows --- modeling --- hydraulic engineering --- computational methods --- simulation

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This Special Issue aims to provide a forum for the latest advances in hydraulic modeling based on the use of shallow water and related models as well as their novel application in practical engineering. Original contributions, including those in but not limited to the following areas, will be considered for publication: new conceptual models and applications, flood inundation and routing, sediment transport and morphodynamic modelling, pollutant transport in water, irrigation and drainage modeling, numerical simulation in hydraulics, novel numerical methods for the shallow water equations and extended models, case studies, and high-performance computing.

Technology: general issues --- History of engineering & technology --- central-upwind --- efficiency --- finite volume --- HLLC --- modern hardware --- Roe --- shallow water equations --- vectorization --- fluvial process --- bank vegetation --- channel pattern --- 2D numerical model --- two-dimensional hydrodynamic model --- local time stepping --- unstructured grids --- numerical simulation --- computational efficiency --- west coast of Korea (WCK) --- tidal elevation --- open boundary condition --- numerical modeling --- TELEMAC-2D --- hydraulic jump --- Boussinesq equations --- MacCormack --- Dissipative two-four --- method of specified intervals --- shallow water --- CasADi --- fast computation --- 1-D --- reservoir model --- PID regulation --- free surface flows --- modeling --- hydraulic engineering --- computational methods --- simulation --- central-upwind --- efficiency --- finite volume --- HLLC --- modern hardware --- Roe --- shallow water equations --- vectorization --- fluvial process --- bank vegetation --- channel pattern --- 2D numerical model --- two-dimensional hydrodynamic model --- local time stepping --- unstructured grids --- numerical simulation --- computational efficiency --- west coast of Korea (WCK) --- tidal elevation --- open boundary condition --- numerical modeling --- TELEMAC-2D --- hydraulic jump --- Boussinesq equations --- MacCormack --- Dissipative two-four --- method of specified intervals --- shallow water --- CasADi --- fast computation --- 1-D --- reservoir model --- PID regulation --- free surface flows --- modeling --- hydraulic engineering --- computational methods --- simulation

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This book aims to provide research and engineering applications related to water and hydraulic problems. It is comprised of scientific papers in all topics of hydraulics, in particular, on sustainable water management, environmental hydraulics, ecohydraulics, water–energy nexus, and systems protection and efficiency. Safety and innovation issues, interdisciplinary problems, and linkage of theory to experimental and field applications can also be found within. Solutions of water problems in the form of prediction models, flow simulations, engineering systems, monitoring, management strategies covering scientific investigations and/or experimental or field studies of flow behaviour, hydrodynamics, and climate changes effects and adaptation, new design solutions, innovative approaches in the field of environment, hydraulics, techniques, methods, and analyses to address the new challenges in environmental hydraulics are alo presented and explored. This topic is studied both from a technical and environmental point of view, with the objective of protecting and enhancing the quality of the environment. In a cross-disciplinary field of study, this book comprises open channel/river flows and pressurised systems, combining, among others, new technological, social, and environmental hydraulic challenges, working in water-related fields with available information, new concepts and tools, new design solutions, eco-friendly technologies, and the advanced materials necessary to address the increasing challenges of ensuring a sustainable water environment by promoting the adaptation, flexibility, integration, and sustainability of recognised environmental solutions.

water well --- hydraulic efficiency --- degradation --- engineering structure --- well ageing --- lifespan --- well operation --- water well management --- sustainable efficiency --- frozen soil --- soil freezing curve --- hydraulic conductivity --- fractal model --- Darcy’s law --- dissolved phosphorus --- hydrodynamic condition --- Lattice Boltzmann method --- release characteristics --- stormwater reuse --- SCS curve number --- CFD --- fecal indicator bacteria --- E. coli --- fish protection --- head loss --- intake --- hydraulics of renewable energy systems --- hydraulic structure design and management --- scale model test --- canal pool --- delay time --- volume compensation --- feedforward control --- downstream constant water level --- toothed internal energy dissipaters (TIED) --- area contraction ratio --- over-current capability --- energy dissipation rate --- time-averaged pressure --- pulsating pressure --- time-averaged velocity --- pulsating velocity --- water level --- Three Gorges Dam --- hydrodynamic model --- river–lake system --- Poyang Lake --- jet falling --- energy dissipation --- surface disturbances --- pressure fluctuations --- water jet --- physical modeling --- water flow diversity --- permeable spur dike --- fish aggregation effect --- channel regulation --- suspended vegetation --- FTW --- ADV --- velocity profile --- submerge ratio --- SVF --- hydro-energy --- CAES --- transient flow --- energy concept --- energy storage --- similarity law --- erosion --- cohesive sediments --- rotating circular flume --- mathematical modelling --- fitting coefficients --- sediment deposition --- flocculation --- bed shear stress --- consolidation --- hydrostatic pressure machine --- micro hydropower --- open source --- sliding mesh --- volume of fluid --- caffa3d --- pumped hydro storage (PHS) --- hybrid hydro-wind-solar solutions --- technical feasibility --- new power generation --- new hydraulic concepts --- sustainable developments --- CFD models --- water systems efficiency --- hydropower systems --- eco-design --- environmentally-friendly solutions --- hydrologic and ecologic challenges --- hydraulic structures --- free surface flows --- pressurised flows --- soil structure --- groundwater --- erosion and energy dissipaters --- hydrodynamics