Optimisation of a Stator Blade Used in a Transonic Compressor Cascade with Evolution Strategies
The evaluation of fluid dynamic properties of various different structures in aerodynamic design optimisation is a computationally demanding process. For the application of evolutionary algorithms it would therefore be beneficial to restrict the population size to a minimum even if parallel genetic algorithms are employed. In this paper, we will show that specific evolution strategies can be successfully used for design optimisation even in the transonic regime with small population sizes and a full Navier Stokes solver for the evaluation. Furthermore, we analyse the self-adaptation properties of the evolution strategy.
KeywordsEvolution Strategy Pressure Loss Strategy Parameter Computational Fluid Dynamic Simulation Stoke Flow
Unable to display preview. Download preview PDF.
- 1.A. Vicini and D. Quagliarella. Airfoil and wing design through hybrid optimization strategies. In 16 th Applied Aerodynamics Conference. American Institu of Aeronautics and Astronautics, 1998. AIAA Paper 98–2729.Google Scholar
- 2.D.J. Doorly. Parallel genetic algorithms for optimization in cfd. In J. Pénaux and G. Winter, editors, Genetic Algorithms in Engineering and Computer Science. Wiley, 1995.Google Scholar
- 6.B. Sendhoff, M. Kreutz, and W. von Seelen. A condition for the genotype-phenotype mapping: Causality. In Thomas Bäck, editor, Genetic Algorithms: Proceedings of the 7th Int. Conf. (ICGA), pages 73–80. Morgan Kaufmann, 1997.Google Scholar
- 8.H.-P. Schwefel. Evolution and Optimum Seeking. John Wiley & sons, New York, 1995.Google Scholar
- 11.N. Hansen and A. Ostermeier. Completely derandomized self-adaptation in evolution strategies. Evolutionary Computation, 2000. To appear.Google Scholar
- 12.M. Kreutz, B. Sendhoff, and Ch. Igel. EALib: A C++ class library for evoluti nary algorithms. Institut für Neuroinformatik, Ruhr-Universität Bochum, 1.4 edition, March 1999.Google Scholar
- 13.M. Olhofer, Y. Yamaguchi, B. Sendhoff, and E. Kürner. Stator blade of axial flow compressor. Japanese Patent No. 348577, December 1999. (in Japanese).Google Scholar