Summary
Characteristics of aerodynamic optimization have been discussed through wing shape design problems. It has been demonstrated that distribution of the objective function can be extremely rough even in a simplified problem. In such a situation, Genetic Algorithm (GA) is more effective than a simple hill-climbing strategy. GA, however, requires a large amount of computational time. To alleviate this, the inverse optimization method is developed and discussed in this paper. This method optimizes target pressure distributions for the inverse problem. In the two dimensions, viscous drag is rninimized under specified lift and airfoil thickness. In the three dimensions, multi-objective GA (MOGA) based on the Pareto ranking method is employed. The present design procedure allows the minimization of the induced drag, while mamtaining the straight isobar pattern of pressures. The resulting procedure is shown to be successful when applied to transonic wing design.
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© 1999 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH, Braunschweig/Wiesbaden
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Obayashi, S. (1999). Inverse Optimization Method for Aerodynamic Shape Design. In: Fujii, K., Dulikravich, G.S. (eds) Recent Development of Aerodynamic Design Methodologies. Notes on Numerical Fluid Mechanics (NNFM), vol 65. Vieweg+Teubner Verlag. https://doi.org/10.1007/978-3-322-89952-1_2
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DOI: https://doi.org/10.1007/978-3-322-89952-1_2
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