Bücher der Reihe Research Topics in Wind Energy

The book introduces the fundamentals of fluid-mechanics, momentum theories, vortex theories and vortex methods necessary for the study of rotors aerodynamics and wind-turbines aerodynamics in particular. Many analytical flows are derived in details: vortex rings, vortex cylinders, Hill's vortex, vortex blobs etc.

This book reconsiders the basic approaches behind the BEM method and in particular assesses and validates the equations forming the general momentum theory.

This book presents the results of the seminar ¿Wind Energy and the Impact of Turbulence on the Conversion Process¿ which was supported from three societies, namely the EUROMech, EAWE and ERCOFATC and took place in Oldenburg, Germany in spring 2012.The seminar was one of the first scientific meetings devoted to the common topic of wind energy and basic turbulence. The established community of researchers working on the challenging puzzle of turbulence for decades met the quite young community of researchers, who face the upcoming challenges in the fast growing field of wind energy applications.From the fluid mechanical point of view, wind turbines are large machines operating in the fully turbulent atmospheric boundary layer. In particular they are facing small-scale turbulent inflow conditions. It is one of the central puzzles in basic turbulence research to achieve a fundamental understanding of the peculiarities of small-scale turbulence. This book helps to better understand the resulting aerodynamics around the wind turbine¿s blades and the forces transmitted into the machinery in this context of puzzling inflow conditions. This is a big challenge due to the multi-scale properties of the incoming wind field ranging from local flow conditions on the profile up to the interaction of wake flows in wind farms.

This book presents numerical and experimental research in the field of wind energy exploitation in urban environments. It comprises a selection of the best papers from the international colloquium ¿Research and Innovation on Wind Energy Exploitation in Urban Environment¿ (TUrbWind), held in Riva del Garda, Italy in September 2018. The book includes contributions from different research fields in urban wind resources, wind energy conversion systems, and urban integration, mainly focusing on the following topics:· turbine concepts for urban and sub-urban environment;· measuring and modelling wind resource;· rotor aerodynamics, wakes and noise;· design, loads, and supporting structures;· novel shapes and materials;· building concepts for wind energy exploitation;· planning approaches for wind exploitation in urban areas.It is a valuable resource for researchers and practitioners interested in the integration of wind energy systems and turbines in urban areas.

The models effectively include geometrically nonlinear terms due to large displacements and rotations, improve the modeling accuracy of very large flexible blades, and enable the modeling of rotational stiffening and buckling, as well as, nonlinear structural coupling.