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Original Articles

Inverse airfoil design by using an accelerated genetic algorithm via distribution strategies

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Pages 563-579 | Received 23 May 2004, Accepted 18 Jan 2005, Published online: 22 Aug 2006

Figures & data

Figure 1. (a) Regular GA. (b) Distribution strategies.

Figure 1. (a) Regular GA. (b) Distribution strategies.

Figure 2. (a) NACA0012 and lower surface modified airfoil (airfoil-1). (b) NACA0012 and upper surface modified airfoil (airfoil-2). (c) Upper surface Cp distribution for NACA 0012 and modified airfoils.

Figure 2. (a) NACA0012 and lower surface modified airfoil (airfoil-1). (b) NACA0012 and upper surface modified airfoil (airfoil-2). (c) Upper surface Cp distribution for NACA 0012 and modified airfoils.

Figure 3. Variation of error ratio with respect to Mach number.

Figure 3. Variation of error ratio with respect to Mach number.

Figure 4. Test history for the Griewank function.

Figure 4. Test history for the Griewank function.

Figure 5. Bezier curve representation of NACA4412 airfoil.

Figure 5. Bezier curve representation of NACA4412 airfoil.

Figure 6. Initial population.

Figure 6. Initial population.

Figure 7. Comparison of best fitness values for different strategies (Case I).

Figure 7. Comparison of best fitness values for different strategies (Case I).

Figure 8. (a) Calculated and target airfoils (Case I). (b) Calculated and target Cp distributions (Case I).

Figure 8. (a) Calculated and target airfoils (Case I). (b) Calculated and target Cp distributions (Case I).

Figure 9. Comparison of best fitness values for different strategies (Case II).

Figure 9. Comparison of best fitness values for different strategies (Case II).

Figure 10. (a) Calculated and target airfoils (Case II). (b) Calculated and target Cp distributions (Case II).

Figure 10. (a) Calculated and target airfoils (Case II). (b) Calculated and target Cp distributions (Case II).

Figure 11. Comparison of best fitness values for different strategies (Case III).

Figure 11. Comparison of best fitness values for different strategies (Case III).

Figure 12. (a) Calculated and target airfoils (Case III). (b) Calculated and target Cp distributions (Case III).

Figure 12. (a) Calculated and target airfoils (Case III). (b) Calculated and target Cp distributions (Case III).

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