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The design and development of water turbines requires accurate methods for performance prediction. Numerical methods and modelling are becoming increasingly important tools to achieve better designs and more efficient turbines, reducing the time required in physical model testing. This book is focused on applying numerical simulations and models for water turbines to predict tool their performance. In this Special Issue, the different contributions of this book are classified into three state-of-the-art Topics: discussing the modelling of pump-turbines, the simulation of horizontal and vertical axis turbines for hydrokinetic applications and the modelling of hydropower plants. All the contributions to this book demonstrate the importance of the modelling and simulation of water turbines for hydropower energy. This new generation of models and simulations will play a major role in the global energy transition and energy crisis, and, of course, in the mitigation of climate change.

Technology: general issues --- History of engineering & technology --- tip leakage flow --- tubular turbine --- clearance discipline --- numerical calculation --- biological --- flap --- hydrodynamic performance --- stall --- CFD --- Computational Fluid Dynamics --- vertical axis water turbine --- overset mesh --- sliding mesh --- design Archimedes screw hydropower plant --- quick estimation method --- Archimedean screw --- fish safe/friendly --- multi-ASG --- hydropower plant --- hydro power plant --- small/micro/pico/low head hydro power plant --- computational fluid dynamics --- volume of fluid --- transition SST k-ω turbulence model --- wake --- fault diagnostics --- model-based fault detection --- fault tolerance --- fuzzy control --- hydrokinetic --- backwater --- inland hydrokinetic --- axial flow turbines --- multiphase pump --- integrated design --- Sparse Grid method --- numerical analysis --- flow field characteristics --- reversible water turbines --- guide vane profile change --- draft tube vortex belt --- pressure pulsation --- energy recovery factor --- pump-turbine --- entropy production --- vorticity --- energy loss --- numerical simulation --- n/a

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This book deals with numerical simulations and computations of the turbulent flow around high-lift configurations commonly used in aircraft. It is devoted to the Computational Fluids Dynamics (CFD) method using full Navier-Stokes solvers typically used in the simulation of high-lift configuration. With the increase of computational resources in the aeronautical industry, the computation of complex flows such as the aerodynamics of high-lift configurations has become an active field not only in academic but also in industrial environments.  The scope of the book includes applications and topics of interest related to the simulation of high-lift configurations such as: lift and drag prediction, unsteady aerodynamics, low Reynolds effects, high performance computing, turbulence modelling, flow feature visualization, among others. This book gives a description of the state-of-the-art of computational models for simulation of high-lift configurations. It also shows and discusses numerical results and validation of these computational models. Finally, this book is a good reference for graduate students and researchers interested in the field of simulation of high-lift configurations.

Space research --- Astronomy --- Fluid mechanics --- Hydraulic energy --- Computer science --- Artificial intelligence. Robotics. Simulation. Graphics --- vloeistofstroming --- aerodynamica --- astronauten --- vormgeving --- computers --- informatica --- mineralen (chemie) --- simulaties --- mijnbouw --- informaticaonderzoek --- ingenieurswetenschappen --- ruimtevaart --- computerkunde --- hydraulica --- vloeistoffen