High-fidelity multi-criteria aero-structural optimisation using hierarchical parallel evolutionary algorithms

L. F. González, L. Damp, J. Périaux, K. Srinivas

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

Abstract

This paper describes a parallel multi-criteria (multi-objective) evolutionary algorithm for aero-structural problems. The foundations of the algorithm are based upon traditional evolution strategies and incorporate the concepts of a multi-objective optimisation, hierarchical topology, asynchronous evaluation and parallel computing. The algorithm works as a black-box optimiser and has been coupled to several aerodynamic and aircraft conceptual design solvers such as a higher order panel method, a commercial FEA solver and an automated aerodynamic and structural mesh generation program. In this automated process the optimiser defines design variables from which the geometry, both internal and external, is generated and then analysed by the aerodynamic solver. The pressure forces are mapped into the structural model. Single or multiple objectives can be defined to find non-dominated-Pareto optimal solutions or the Nash equilibrium. The parallel computing capabilities in combination with hierarchical levels of aerodynamic and FEA solvers are exploited to reduce computational expense. Applications and results on the use of the methodology are illustrated on the aero-structural analysis of a high aspect ratio aircraft/UAV wing.

Original languageEnglish
Title of host publicationComputational Fluid Dynamics 2006 - Proceedings of the Fourth International Conference on Computational Fluid Dynamics, ICCFD 2006
Place of PublicationHeidelberg; New York
PublisherSpringer, Springer Nature
Pages543-548
Number of pages6
ISBN (Electronic)9783540927792
ISBN (Print)9783540927785
DOIs
Publication statusPublished - 2009
Event4th International Conference on Computational Fluid Dynamics, ICCFD 2006 - Ghent, Belgium
Duration: 10 Jul 200614 Jul 2006

Other

Other4th International Conference on Computational Fluid Dynamics, ICCFD 2006
CountryBelgium
CityGhent
Period10/07/0614/07/06

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