Robust optimization of turbomachinery cascades using inverse methods
Autor: | C. J. B. Reis, N. Manzanares-Filho, A.M.G. de Lima |
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Rok vydání: | 2015 |
Předmět: |
Optimal design
0209 industrial biotechnology Mathematical optimization business.industry Mechanical Engineering Applied Mathematics General Engineering Evolutionary algorithm Aerospace Engineering Robust optimization Context (language use) 02 engineering and technology Aerodynamics Computational fluid dynamics 01 natural sciences Industrial and Manufacturing Engineering 010101 applied mathematics 020901 industrial engineering & automation Robustness (computer science) Control theory Automotive Engineering Turbomachinery 0101 mathematics business Mathematics |
Zdroj: | Journal of the Brazilian Society of Mechanical Sciences and Engineering. 38:297-305 |
ISSN: | 1806-3691 1678-5878 |
Popis: | It is widely known that real-world airfoils and turbomachinery cascades are subjected to small perturbations in their geometries due to the manufacturing errors and operational and environmental conditions. As a result, the performance requirements of such systems can be significantly affected, leading to poor designs or even severe failures during operation. In this context, the concept of robust optimal design in computational fluid dynamics is very interesting and can be conveniently carried out by using modern multiobjective numerical optimization techniques, in which the interest is to generate optimal and robust aerodynamic shapes that are less sensitive to small perturbations during their useful life. However, the large number of evaluations of the cost functions makes the use of direct methods in the robust optimization of turbomachinery cascades in aerodynamics very costly, sometimes unfeasible. Those difficulties motivate the study reported in this paper, in which a robust optimization strategy by using inverse methods is proposed consisting in the use of multiobjective evolutionary algorithms to be combined with robustness functions specially adapted to turbomachinery cascades. |
Databáze: | OpenAIRE |
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