Search for dissertations about: "Stefan S. A. Ivanell"

Found 4 swedish dissertations containing the words Stefan S. A. Ivanell.

  2. 1. Numerical computations of wind turbine wakes

    Author : Stefan S. A. Ivanell; Dan Henningsson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Applied mechanics; Wind Energy; Wind Turbine; Wake; Circulation; Vortex; CFD; EllipSys3D; Actuator line; Teknisk mekanik; Engineering mechanics; Teknisk mekanik;

    Abstract : Numerical simulations using CFD methods are performed for wind turbine applications. The aim of the project is to get a better understanding of the wake behaviour, which is needed since today’s industrial design codes for wind power applications are based on the BEM (Blade Element Momentum) method. READ MORE

  4. 2. Numerical computations of wind turbine wakes

    Author : Stefan S. A. Ivanell; Dan Henningson; Peinke Joachim; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Actuator Line Model; Actuator Disc Model; Wind Turbine Wake; CFD; LES; EllipSys3D; Fluid mechanics; Strömningsmekanik;

    Abstract : Numerical simulations of the Navier-Stokes equations are performed to achieve a better understanding of the behaviour of wakes generated by wind turbines. The simulations are performed by combining the in-house developed computer code EllipSys3D with the actuator line and disc methodologies. READ MORE

  5. 3. Wind Power and Natural Disasters

    Author : Jon Olauson; Mikael Bergkvist; Stefan Ivanell; Uppsala universitet; []
    Keywords : Wind power; Natural disasters; Hybrid energy system; Meteorological model; Statistical model; Variability; Wind power integration;

    Abstract : Wind power can be related to natural disasters in several ways. This licentiate thesis gives some background and introduces four papers devoted to two aspects of this relation. The first section looks into how small-scale wind energy converters (WECs) could be used to generate power after a natural disaster. READ MORE

  6. 4. Efficient Large-­eddy Simulation for Wind Energy Applications

    Author : Henrik Asmuth; Stefan Ivanell; Hugo Olivares-Espinosa; Karl Nilsson; Richard Stevens; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Modelling the interaction of wind turbines with the ambient flow is essential for almost all technical aspects of wind energy exploitation. Large-eddy simulation (LES) is the most detailed approach feasible to model this complex interaction of wind turbines with the atmospheric boundary layer and the wakes of upstream turbines. READ MORE