Master Degree / Yüksek Lisans Tezleri
Permanent URI for this collectionhttps://hdl.handle.net/11147/3008
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Master Thesis Comouter-Aided Aerodynamic Design of Small Scale Horizontal Axis Wind Turbine Blades(Izmir Institute of Technology, 2012) Göçmen, Tuhfe; Özerdem, Barış; Özerdem, Mehmet Barış; 03.10. Department of Mechanical Engineering; 03. Faculty of Engineering; 01. Izmir Institute of TechnologyIn this thesis, aerodynamic design of 1, 5, 10, 25, 50, 100, 250 and 500 kW horizontal axis wind turbine generators has been performed. The design procedure starts with the design and analysis of airfoils done by programs of PROFOIL and XFOIL, respectively through which the structural, aerodynamic and aeroacoustic principles have been taken into consideration. Then, the performance parameters of designed profiles were inputted to the constructed modified blade element momentum theory (BEM) code together with the main design parameters in order to obtain 3D blade geometry. The code is validated using MIE wind turbine with a rated power of 8 kW. The generated blade geometries are then analyzed using commercial computational fluid dynamics CFD code Numeca FINEâ„¢/Turbo and the velocity and pressure distributions around the blade have been visualized, separately. Moreover, the power coefficient, Cp was calculated and the power curves of the designed wind turbine rotors were drawn.Master Thesis Investigation of Aerodynamic Effects on Performance of Wind Turbine Blades by Using Finite Element Method(Izmir Institute of Technology, 2005) Tosun, Mehmet Mahir; Özerdem, Barış; Özerdem, Mehmet Barış; 03.10. Department of Mechanical Engineering; 03. Faculty of Engineering; 01. Izmir Institute of TechnologyIn this study, design of the most suitable wind turbine rotor for Iztech campus area is performed by taking into account aerodynamic effects.Aerodynamic properties of various airfoils are determined, numerically, by using a software called FLUENT. Blade element momentum theory is applied to find chord lengths and twist angles for mean wind speed at 10m height in Iztech campus area. Rotor performance is determined by using blade element momentum theory. Effects of twist angle and tip speed ratio are investigated for blade design. Rotor maximum power coefficient of the new designed blade is found as 0.4313 while another design in use gives a maximum power coefficient of 0.4044.It can be noted that new designed blade is more efficient, as it gives the maximum power coefficient at design conditions, 6.85 m/s wind speed at 10 m height and 25oC ambient temperature. It is observed that new design gives higher power values than the design in use, over 5.8 m/s wind speed.