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This Special Issue is a collection of the latest research articles on various topics related to wind turbine aerodynamics, which includes wind turbine design concepts, tip loss correction study, wind turbine acoustics modelling, and the vertical axis wind turbine concept.

Technology: general issues --- wind turbine aerodynamics --- actuator disc --- AD/NS --- tip loss correction --- blade element momentum --- orthopter --- vertical axis wind turbine --- power coefficient --- torque coefficient --- shear flow --- wind tunnel --- CFD --- delayed detached-eddy simulation --- wind turbine --- tilt angle --- unsteady aerodynamics --- computational fluid dynamics --- wind tunnel experiment --- wind turbine airfoil --- turbulence --- Gurney flap --- aerodynamic characteristics --- aeroacoustics --- noise modelling --- noise control --- coned rotor --- aerodynamics --- n/a

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This Special Issue is a collection of the latest research articles on various topics related to wind turbine aerodynamics, which includes wind turbine design concepts, tip loss correction study, wind turbine acoustics modelling, and the vertical axis wind turbine concept.

Technology: general issues --- wind turbine aerodynamics --- actuator disc --- AD/NS --- tip loss correction --- blade element momentum --- orthopter --- vertical axis wind turbine --- power coefficient --- torque coefficient --- shear flow --- wind tunnel --- CFD --- delayed detached-eddy simulation --- wind turbine --- tilt angle --- unsteady aerodynamics --- computational fluid dynamics --- wind tunnel experiment --- wind turbine airfoil --- turbulence --- Gurney flap --- aerodynamic characteristics --- aeroacoustics --- noise modelling --- noise control --- coned rotor --- aerodynamics --- wind turbine aerodynamics --- actuator disc --- AD/NS --- tip loss correction --- blade element momentum --- orthopter --- vertical axis wind turbine --- power coefficient --- torque coefficient --- shear flow --- wind tunnel --- CFD --- delayed detached-eddy simulation --- wind turbine --- tilt angle --- unsteady aerodynamics --- computational fluid dynamics --- wind tunnel experiment --- wind turbine airfoil --- turbulence --- Gurney flap --- aerodynamic characteristics --- aeroacoustics --- noise modelling --- noise control --- coned rotor --- aerodynamics

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This book collects the accepted contributions to the Special Issue "The Numerical Simulation of Fluid Flow" in the Energies journal of MDPI. It is focused more on practical applications of numerical codes than in its development. It covers a wide variety of topics, from aeroacoustics to aerodynamics and flow-particles interaction.

cave formation --- P-waves --- S-waves --- Stoneley wave --- scattered wave --- bluff body --- roughness model --- Venturi effect --- suppression hybrid control --- Lagrangian description --- Formula 1 --- Computational Fluid Dynamics (CFD) --- external aerodynamics --- OpenFoam --- snappyHexMesh --- incompressible flow --- Federation Internationale de l’Automobile (FIA) --- downforce --- drag --- vortex --- wake --- bluff body aerodynamics --- boundary layer separation --- vortex shedding --- Lagrangian vortex method --- vertical axis wind turbine (VAWT) --- two-dimensional wake simulation --- finite vortex method --- vortex particle method --- three-dimensional effect correction model of the wake --- local radial point interpolation cumulant LBM --- aeroacoustics --- dispersion --- dissipation --- wind turbine --- immersed boundary method --- quasi multi-moment method --- incompressible Navier–Stokes equation --- dispersion-relation-preserving --- flow–structure interaction

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The book contains the research contributions belonging to the Special Issue "Numerical Simulation of Wind Turbines", published in 2020-2021. They consist of 15 original research papers and 1 editorial. Different topics are discussed, from innovative design solutions for large and small wind turbine to control, from advanced simulation techniques to noise prediction. The variety of methods used in the research contributions testifies the need for a holistic approach to the design and simulation of modern wind turbines and will be able to stimulate the interest of the wind energy community.

large-scale wind turbine balde --- computational aeroacoustics --- sound source detection --- low Mach number turbulent flows --- NACA0012 airfoil --- fluid–structure interaction --- wind turbine --- atmospheric boundary layer --- composite materials --- gusts --- wind energy --- actuator line method --- wind turbine simulation --- regularization kernel --- small wind turbine (SWT) --- computational fluid dynamics (CFD) --- composites --- fluid–structure interaction (FSI) --- VAWT --- gurney flap --- CFD --- RBF --- power augmentation --- Darrieus --- turbulence --- experiments --- turbine wake --- turbine size --- large-eddy simulation --- actuator surface model --- wind turbine wake --- actuator disk model --- dynamic mode decomposition --- coherent structures --- wake meandering --- vertical axis wind turbine (VAWT) --- Savonius turbine --- deformable blades --- power coefficient --- blade load --- fluid-structure interaction (FSI) --- uncertainty quantification --- blade damage --- AEP --- winglet --- computational fluid dynamics (CFD), wind energy --- renewable energy --- rotor blade --- tip vortices --- aerodynamics --- ansys fluent --- savonius turbine --- icewind turbine --- static torque --- three-dimensional simulation --- Delayed DES --- H-Darrieus --- micro wind power generation --- wind turbine control --- load mitigation --- individual pitch control --- lifting line free vortex wake --- vortex methods --- pitch --- stall --- engineering codes --- n/a --- fluid-structure interaction

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This book presents collective works published in the recent Special Issue (SI) entitled "Aero/Hydrodynamics and Symmetry". These works address the existence of symmetry and its breakdown in aero-/hydro-dynamics and their related applications. The presented problems are complex nonlinear, non-Newtonian fluid flow problems that are (in some cases) coupled with heat transfer, phase change, nanofluidic, and magnetohydrodynamics phenomena. The applications vary and range from polymer chain transfer in micro-channel to the evaluation of vertical axis wind turbines, as well as autonomous underwater hovering vehicles. Recent advances in numerical, theoretical, and experimental methodologies, as well as finding new physics, new methodological developments, and their limitations are presented within the scope of the current book. Among others, in the presented works, special attention is paid to validation and improving the accuracy of the presented methodologies. This book brings together a collection of inter-/multi-disciplinary works applied to many engineering applications in a coherent manner.

History of engineering & technology --- Savonius vertical axis wind turbine --- horizontal overlap ratio --- vertical overlap ratio --- torque coefficient --- power coefficient --- Advection–diffusion --- fractional derivative --- concentrated source --- integral transform --- Burgers’ fluid --- velocity field --- shear stress --- Laplace transform --- modified Bessel function --- Stehfest’s algorithm --- MATHCAD --- electroosmotic flow --- power law fluid --- nanoparticles --- MHD --- entropy generation --- convergence analysis --- residual error --- autonomous underwater vehicle (AUV) --- airborne-launched AUV --- autonomous underwater hovering vehicle (AUH) --- water entry impact force --- computational fluid dynamics (CFD) --- two-phase flow --- Autonomous Underwater Vehicle (AUV) --- Autonomous Underwater Hovering Vehicle (AUH) --- hydrodynamic interaction --- response amplitude operator (RAO) --- wave effects --- symmetric flying wing --- plasma flow control --- energy --- stall --- dimensionless frequency --- particle image velocimetry --- SA–NaAlg fluid --- porosity --- fractional model --- Atangana–Baleanu derivative --- large eddy simulation --- subgrid scale model --- diffuser --- dynamic one equation model --- Vreman model --- separation --- heat conduction --- non-fourier --- solution structure theorems --- superposition approach --- Buongiorno model --- unsteady flow --- nanoliquid --- special third-grade liquid --- non-linear thermal radiation --- magneto hydro-dynamics (MHD) --- dissipative particle dynamics (DPD) --- Hartmann number (Ha-value) --- harmony bond coefficient or spring constant (K) --- Savonius vertical axis wind turbine --- horizontal overlap ratio --- vertical overlap ratio --- torque coefficient --- power coefficient --- Advection–diffusion --- fractional derivative --- concentrated source --- integral transform --- Burgers’ fluid --- velocity field --- shear stress --- Laplace transform --- modified Bessel function --- Stehfest’s algorithm --- MATHCAD --- electroosmotic flow --- power law fluid --- nanoparticles --- MHD --- entropy generation --- convergence analysis --- residual error --- autonomous underwater vehicle (AUV) --- airborne-launched AUV --- autonomous underwater hovering vehicle (AUH) --- water entry impact force --- computational fluid dynamics (CFD) --- two-phase flow --- Autonomous Underwater Vehicle (AUV) --- Autonomous Underwater Hovering Vehicle (AUH) --- hydrodynamic interaction --- response amplitude operator (RAO) --- wave effects --- symmetric flying wing --- plasma flow control --- energy --- stall --- dimensionless frequency --- particle image velocimetry --- SA–NaAlg fluid --- porosity --- fractional model --- Atangana–Baleanu derivative --- large eddy simulation --- subgrid scale model --- diffuser --- dynamic one equation model --- Vreman model --- separation --- heat conduction --- non-fourier --- solution structure theorems --- superposition approach --- Buongiorno model --- unsteady flow --- nanoliquid --- special third-grade liquid --- non-linear thermal radiation --- magneto hydro-dynamics (MHD) --- dissipative particle dynamics (DPD) --- Hartmann number (Ha-value) --- harmony bond coefficient or spring constant (K)