Combined analytical/FEA-based coupled aero structure simulation of a wind turbine with bend–twist adaptive blades

Maheri, Alireza, Noroozi, Siamak and Vinney, John (2007) Combined analytical/FEA-based coupled aero structure simulation of a wind turbine with bend–twist adaptive blades. Renewable Energy, 32 (6). pp. 916-930. ISSN 0960-1481

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Official URL: http://dx.doi.org/10.1016/j.renene.2006.04.007

Abstract

The simulation of wind turbines with bend–twist adaptive blades is a coupled aero-structure (CAS) procedure. The blade twist due to elastic coupling is a required parameter for wind turbine performance evaluation and can be predicted through a finite element (FE) structural analyser. FEA-based codes are far too slow to be useful in the aerodynamic design/optimisation of a blade. This paper presents a combined analytical/FEA-based method for CAS simulation of wind turbines utilising bend–twist adaptive blades. This method of simulation employs the induced twist distribution and the flap bending at the hub of the blade predicted through a FEA-based CAS simulation at a reference wind turbine run condition to determine the wind turbine performance at other wind turbine run conditions. This reduces the computational time significantly and makes the aerodynamic design/optimisation of bend–twist adaptive blades practical. Comparison of the results of a case study which applies both combined analytical/FEA-based and FEA-based CAS simulation shows that when using the combined method the required computational time for generating a power curve reduces to less than 5%, while the relative difference between the predicted powers by two methods is only about 1%.

Item Type: Article
Uncontrolled Keywords: elastic coupling, coupled-aero-structure simulation
Subjects: H300 Mechanical Engineering
H400 Aerospace Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Sarah Howells
Date Deposited: 14 Nov 2012 15:34
Last Modified: 10 Aug 2015 11:33
URI: http://nrl.northumbria.ac.uk/id/eprint/10237

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