Sökning: "wind turbine blade"
Visar resultat 1 - 5 av 35 avhandlingar innehållade orden wind turbine blade.
1. Numerical computations of wind turbine wakes
Sammanfattning : 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. LÄS MER
2. Wind-turbine wake flows - Effects of boundary layers and periodic disturbances
Sammanfattning : 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 and a subject of intensive research. These problems are caused by the velocity gradients and high turbulence levels present in the wake of a turbine. LÄS MER
3. Aerolastic simulation of wind turbine dynamics
Sammanfattning : The work in this thesis deals with the development of an aeroelastic simulation tool for horizontal axis wind turbine applications. Horizontal axis wind turbines can experience significant time varying aerodynamic loads, potentially causing adverse effects on structures, mechanical components, and power production. LÄS MER
4. Aerodynamics of Vertical Axis Wind Turbines : Development of Simulation Tools and Experiments
Sammanfattning : This thesis combines measurements with the development of simulation tools for vertical axis wind turbines (VAWT). Numerical models of aerodynamic blade forces are developed and validated against experiments. The studies were made on VAWTs which were operated at open sites. LÄS MER
5. Numerical computations of wind turbine wakes
Sammanfattning : 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. LÄS MER