Sökning: "Actuator disc method"
Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Actuator disc method.
1. Wind power wake modelling : Development and application of an actuator disc method for industrial utilization
Sammanfattning : As a wind turbine extracts energy from the wind it creates a region downstream where the wind velocity is decreased and the urbulence intensity is increased, this region is commonly called the wake region. Today’s wind farms include a large number of wind turbines position in tight layouts. LÄS MER
2. Numerical computations of wind turbine wakes and wake interaction : Optimization and control
Sammanfattning : In the present thesis the wake flow behind wind turbines is analyzed numerically using large-eddy simulations. The wind turbine rotors are modeled by using either the actuator disc method or the actuator line method in which the blades are represented by body forces computed with airfoil data. LÄS MER
3. 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
4. A body force method for high precision offshore wake modelling simulations
Sammanfattning : .... 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