Iterative approach for optimising coefficient of power, coefficient of lift and drag of wind turbine rotor

S. Rajakumar and D. Ravindran

Renewable Energy, 2012, vol. 38, issue 1, 83-93

Abstract: This paper presents an approach for the determination of aerodynamic performance characteristics of horizontal-axis wind turbines. The optimum twist of a windmill blade is examined on the basis of elementary blade-element theory. For a given wind speed and blade angular velocity, it is shown that the maximum power efficiency is achieved when the blade is twisted according to a program that depends upon the variation of the sectional lift and drag coefficients with angle of attack. Results for a typical airfoil cross-section show that the optimum angle of attack and optimum twist angle of the blade improves the performance of the wind turbine.

Keywords: Blade element; Angle of attack; CFD; Chord; Twist (search for similar items in EconPapers)
Date: 2012
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:38:y:2012:i:1:p:83-93

DOI: 10.1016/j.renene.2011.07.006

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