Shape Optimization of NREL S809 Airfoil for Wind Turbine Blades Using a Multiobjective Genetic Algorithm

Table 6

Comparison of / of optimized airfoils: present results and those of Ritlop and Nadarajah [10].

	Present results at 23% span	Ritlop and Nadarajah [10] results at 23% span	Present results at 58% span	Ritlop and Nadarajah [10] results at 58% span	Present results at 98% span	Ritlop and Nadarajah [10] results at 98% span
Original /	40.17289	45.5	43.22983	47	37.77	36.2
Optimal /	48.48394	50.8	49.01435	51.8	48.89	47
/ improved by	20.688%	13%	13.38%	10%	29.44%	29.83%