Shock Control Bump design optimization on Natural Laminar Aerofoil

D. S. Lee*, J. Periaux, K. Srinivas, L. F. Gonzalez, N. Qin, E. Onate

*Corresponding author for this work

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

3 Citations (Scopus)

Abstract

The chapter investigates Shock Control Bumps (SCB) on a Natural Laminar Flow (NLF) aerofoil; RAE 5243 for Active Flow Control (AFC). A SCB approach is used to decelerate supersonic flow on the suction/pressure sides of transonic aerofoil that leads delaying shock occurrence or weakening of shock strength. Such an AFC technique reduces significantly the total drag at transonic speeds. This chapter considers the SCB shape design optimisation at two boundary layer transition positions (0 and 45%) using an Euler software coupled with viscous boundary layer effects and robust Evolutionary Algorithms (EAs). The optimisation method is based on a canonical Evolution Strategy (ES) algorithm and incorporates the concepts of hierarchical topology and parallel asynchronous evaluation of candidate solution. Two test cases are considered with numerical experiments; the first test deals with a transition point occurring at the leading edge and the transition point is fixed at 45% of wing chord in the second test. Numerical results are presented and it is demonstrated that an optimal SCB design can be found to significantly reduce transonic wave drag and improves lift on drag (L/D) value when compared to the baseline aerofoil design.

Original languageEnglish
Title of host publicationComputational fluid dynamics 2010
Subtitle of host publicationProceedings of the Sixth International Conference on Computational Fluid Dynamics, ICCFD6, St Petersburg, Russia, on July 12-16, 2010
EditorsAlexander Kuzmin
Place of PublicationBerlin; Heidelberg
PublisherSpringer, Springer Nature
Pages253-259
Number of pages7
ISBN (Electronic)9783642178849
ISBN (Print)9783642178832
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event6th International Conference on Computational Fluid Dynamics, ICCFD 2010 - St. Petersburg, Russian Federation
Duration: 12 Jul 201016 Jul 2010

Other

Other6th International Conference on Computational Fluid Dynamics, ICCFD 2010
CountryRussian Federation
CitySt. Petersburg
Period12/07/1016/07/10

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