Search for dissertations about: "lifting-line theory"

Found 5 swedish dissertations containing the words lifting-line theory.

2. 1. Development of Vortex Filament Method for Aerodynamic Loads on Rotor Blades

   Author : Hamidreza Abedi; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lifting line; vortex lattice method; free wake; rotor blade; prescribed wake; lifting surface; aerodynamic load; wind turbine;

   Abstract : Wind power is currently one of the most reliable new energy sources serving as an alternative tofossil fuel generated electricity and is known as a widely distributed clean and renewable sourceof energy. It is now the world’s fastest growing energy source and has also become one of themost rapidly expanding industries. READ MORE

4. 2. Numerical computation of ship stern/propeller flow

   Author : Daohua Zhang; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lifting-line theory; Body-fitted coordinate system; viscous flow; Reynolds-Avraged NAvier-Stokes equations; stern flow; propeller; turbulence model; grid generation; propeller-hull interaction; body-force; numerical calculation;

   Abstract : .... READ MORE

5. 3. On stability of vortices and vorticity generated by actuator lines

   Author : Vitor Gabriel Kleine; Dan S. Henningson; Ardeshir Hanifi; Stéphane Le Dizès; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk mekanik; Engineering Mechanics;

   Abstract : Vortices are present in nature and in many flows of industrial importance. The stability of configurations of vortices can have real-world consequences, because vortices play a crucial role in accelerated mixing. In particular, vortices are present in the wake of wind turbines and other rotors. READ MORE

6. 4. Development of Vortex Filament Method for Wind Power Aerodynamics

   Author : Hamidreza Abedi; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; unsteady aerodynamic load; atmospheric turbulence; fatigue loads; Free wake model; forest canopy; wind turbine; vortex method; large-eddy simulation;

   Abstract : Wind power is currently one of the cleanest and widely distributed renewable energy sources serving as an alternative to fossil fuel generated electricity. Exponential growth of wind turbines all around the world makes it apt for different research disciplines. READ MORE

7. 5. Computational fluid-dynamics investigations of vortex generators for flow-separation control

   Author : Florian von Stillfried; Arne Johansson; Stefan Wallin; Jonathan Morrison; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flow-separation control; vane vortex generator; vortex generator jet; zero-pressure-gradient turbulent boundary layer; adverse-pressure-gradient turbulent boundary layer; statistical modelling; turbulence; Reynolds stress- transport model; computational fluid dynamics;

   Abstract : Many flow cases in fluid dynamics face undesirable flow separation due to ad-verse pressure gradients on wall boundaries. This occurs, for example, due togeometrical reasons as in a highly curved turbine-inlet duct or on flow-controlsurfaces such as wing trailing-edge flaps within a certain angle-of-attack range. READ MORE