Search for dissertations about: "Wakes"
Showing result 21 - 25 of 49 swedish dissertations containing the word Wakes.
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21. Numerical study on instability and interaction of wind turbine wakes
Abstract : The optimization of new generation of the wind farms is dependent on our understanding of wind turbine wake development, wake dynamics and the interaction of the wakes. The overall goal of the optimization is decreasing the fatigue loading and increasing the power production of the wind farms. READ MORE
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22. Wakes behind wind turbines - Studies on tip vortex evolution and stability
Abstract : The increased fatigue loads and decreased power output of a wind turbine placed in the wake of another turbine is a well-known problem when building new wind power farms. In order to better estimate the total power output of a wind power farm, knowledge about the development and stability of wind turbine wakes is crucial. READ MORE
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23. Linear stability of plane wakes and liquid jets: global and local approach
Abstract : .... READ MORE
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24. Numerical stability studies of one-phase and immiscible two-phase jets and wakes
Abstract : The initial linear instability growth of two-dimensional plane wakes and jetsis investigated, by temporal two-dimensional global modes, and local spatialstability analysis. Comparisons are also made to experiments, direct numericalsimulations, and methods designed for weakly-non-parallel flows. READ MORE
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25. Active Control and Reduced-Order Modeling of Transition in Shear Flows
Abstract : In this thesis direct numerical simulation is used to investigate the possibilityto delay the transition from laminar to turbulent in boundary layer flows.Furthermore, modal analysis is used to reveal the coherent structures in highdimensional dynamical systems arising in the flow problems. READ MORE