Improvement of the accuracy of the blade element momentum theory method in wind turbine aerodynamics analysis

Macquart, Terence, Maheri, Alireza and Busawon, Krishna (2012) Improvement of the accuracy of the blade element momentum theory method in wind turbine aerodynamics analysis. In: Proceedings of the 2012 2nd International Symposium On Environment Friendly Energies And Applications. IEEE, Piscataway, NJ, pp. 402-405. ISBN 978-1467329095

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Abstract

Blade element momentum theory (BEMT) is based on an iterative process in which the axial and rotational induction factors are determined within an iteration loop. In unsteady BEMT the effect of dynamic stall on the lift coefficient is taken into account. Normally, the effect of dynamic stall on the converged values for induction factors is neglected and correction to the lift coefficient is applied after obtaining induction factors, outside the iteration loop. In this paper it is shown that this can lead to inaccurate results. This paper also proposes a method for reducing the number of iterations significantly and therefore making the integration of dynamic stall inside the iteration loop efficient.

Item Type:	Book Section
Additional Information:	2nd International Symposium on Environment Friendly Energies and Applications (EFEA), 2012, held in Newcaslte upon Tyne from 25-27 June 2012.
Subjects:	H300 Mechanical Engineering H400 Aerospace Engineering
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering Faculties > Engineering and Environment > Mechanical and Construction Engineering
Related URLs:	Library Catalogue
Depositing User:	Sarah Howells
Date Deposited:	07 Nov 2012 11:58
Last Modified:	12 Oct 2019 22:29
URI:	http://nrl.northumbria.ac.uk/id/eprint/10186

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