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Publications
Bagbanci, H., Shah, A.S. and Guedes Soares, C. (2013), “Stationary blade CFD analysis on aerofoil of offshore floating wind turbine”, 32nd International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2013), 9-14 June, Nantes, France
In recent years, the wind turbines are observed to be the largest rotating machines on earth. The world’s largest passenger airliner, such as Airbus A-380, has a wing span of about 80m whereas Enercon E-126/6 MW wind turbine has a rotor diameter of 126m with the tower of 138m tall and that makes the wind turbine to reach 200m of overall height from tower base to blade tip. It is observed that the wind turbine blades are affected by a force distribution, which results in a mechanical torque at the rotor shaft and the aerodynamic driving force which is mainly the lift force. Thus the detailed study on the wind turbine blades is very essential.
In order to study the loads and performance calculations of wind turbines, the Blade-Element Momentum method (BEM) is used nowadays. This method is indeed computationally cheap, very fast and also provides very satisfactory results. For each blade element, the aerodynamic forces are obtained using tabulated airfoil data, which is obtained from wind tunnel measurements and corrected for three-dimensional effects.
In the present study, the stationary blade CFD analysis have been used in order to analyze the performance of the rotor and the experimental data from NASA-Quest has been considered for the S809 aerofoil to compare the performance of the rotor. The data of S809 aerofoil is used to calculate the power and thrust values for the wind turbine using stationary blade CFD analysis on the aerofoil. In addition a brief comparison of the pressure coefficient distribution and lift coefficient obtained using CFD analysis and the results obtained from NREL experiments are validated. The present study will help to analyze the efficiency of the aerofoil and also the performance of the wind turbine in terms of power output. Thus, the stationary blade CFD analysis on the aerofoil will help in the analysis of the power output and economic performance of the turbine.
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