Evolving strategies for active flow control

Michele Milano, Petros Koumoutsakos, Xavier Giannakopoulos, Jiirgen Schmidhuber

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations


Rechenberg and Schwefel (Rechenberg, 1994) came up with the idea of evolution strategies for flow optimization. Since then advances in computer architectures and numerical algorithms have greatly decreased computational costs of realistic flow simulations, and today computational fluid dynamics (CFD) is complementing flow experiments as a key guiding tool for aerodynamic design. Of particular interest are designs with active devices controlling the inherently unsteady flow fields, promising potentially drastic performance leaps. We demonstrate that CFD-based design of active control strategies can benefit from evolutionary computation. We optimize the flow past an actively controlled circular cylinder, a fundamental prototypical configuration. The flow is controlled using surface-mounted vortex generators; evolutionary algorithms are used to optimize actuator placement and operating parameters. We achieve drag reduction of up to 60 percent, outperforming the best methods previously reported in the fluid dynamics literature on this benchmark problem. © 2000 IEEE.
Original languageEnglish (US)
Title of host publicationProceedings of the 2000 Congress on Evolutionary Computation, CEC 2000
PublisherIEEE Computer Societyhelp@computer.org
Number of pages7
StatePublished - Jan 1 2000
Externally publishedYes


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