Numerical Validation of the Power Performance of HAWT (Ge 1.5xle) by Computational Fluid Dynamic of the Manufacturing Technical Data

Abstract

This paper was conducted to characterize the aerodynamic behaviour of the blade wind turbine (Ge1.5xle) by computational fluid dynamics (CFD), the simulation was performed typical to the blade of Ge1.5xle which is 41.25 m length using three different airfoils S818, S825 and S826 for the blade root, primary and tip respectively. The blade was added one meter for fixation to the hub of rotation. The blade designed to be twist by 42 degrees from first airfoil place to the last one at the tip of the blade with attack angle is 4 degree based on the specification of the wind turbine Ge 1.5xle to enable comparison the results of computational fluid dynamics (CFD) with the specification data of wind turbine mentioned above, also with the theoretical calculations. The results of simulation at rated wind speed 11.5 (m/s) are agreed with the specification data of the wind turbine such as the aerodynamic efficiency is 29(%), but obvious variation is observed for blade tip speed. Furthermore, the velocity vectors are in good agreement with flow characteristic and the flow was perfectly attached and there is no flow separation over the three different airfoils used.