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

Table 1

Coordinates of the control points used in airfoil parameterization.

		Upper limit	Lower limit			Upper limit	Lower limit
Top; boundary		0.020	0.000	Bottom; boundary		0.020	0.000
		0.065	0.025			0.100	0.060
		0.340	0.300			0.300	0.260
		0.400	0.360			0.400	0.360
		0.500	0.460			0.480	0.440
		0.850	0810			0.770	0.730
		0.030	0.010			−0.013	−0.025
		0.090	0.070			−0.053	−0.065
		0.128	0.108			−0.125	−0.145
		0.128	0.108			−0.125	−0.145
		0.128	0.108			−0.125	−0.145
		0.045	0.025			0.020	0.008