NUMERICAL ANALYSIS ON THE EFFECTS OF ARM ON THE STRAIGHT BLADE OF A VERTICAL AXIS WIND TURBINE

抄録

Three dimension computational fluid dynamics was carried out to investigate the effects of horizontal arms on the performance of a straight-bladed vertical axis wind turbine. Three rotor models having different arms in terms of the cross section (airfoil, rectangular, circular), in addition to the armless rotor model, were calculated. Pressure-based total drag caused by the existence of arms became the greatest in the case of cylindrical arm, followed by the cases of rectangular arm and airfoil arm.