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Development of Vortex Filament Method for Aerodynamic Loads on Rotor Blades

Hamidreza Abedi (Institutionen för tillämpad mekanik, Strömningslära ; Svenskt VindkraftsTekniskt Centrum (SWPTC))
Göteborg : Chalmers University of Technology, 2013. - 86 s.

Wind power is currently one of the most reliable new energy sources serving as an alternative to fossil fuel generated electricity and is known as a widely distributed clean and renewable source of energy. It is now the world’s fastest growing energy source and has also become one of the most rapidly expanding industries. The aerodynamics of a wind turbine are governed by the flow around the rotor, where the prediction of air loads on rotor blades in different operational conditions and its relation to rotor structural dynamics is crucial for design purposes. One of the most important challenges in wind turbine aerodynamics is therefore to accurately predict the forces on the blade, where the blade and wake are modeled by different approaches such as the Blade Element Momentum (BEM) theory, the vortex method and Computational Fluid Dynamics (CFD). Here, the application of the vortex filament method for wind turbine aerodynamic performance is used. Different blade models such as the lifting line and the lifting surface with prescribed and free wake models are studied. The main purpose is to find the proper combination of blade and wake models for the aerodynamic loads as well as the computational time in order to develop an accurate and efficient aerodynamic tool. The results of the different approaches are compared with the BEM method and GENUVP code (see the acknowledgments).

Nyckelord: aerodynamic load, rotor blade, wind turbine, lifting line, lifting surface, vortex lattice method, prescribed wake, free wake

Denna post skapades 2013-10-22. Senast ändrad 2013-11-26.
CPL Pubid: 185505


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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Strömningslära
Svenskt VindkraftsTekniskt Centrum (SWPTC)



Chalmers infrastruktur


Datum: 2013-11-18
Tid: 13:15
Lokal: Delta & Gamma Room, Hörsalsvägen 7A, Chalmers University of Technology, Gothenburg, Sweden
Opponent: Prof. Jens Nørkær Sørensen, Department of Wind Energy (Fluid Mechanics), Technical University of Denmark (DTU), Denmark

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Technical report - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden 2