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Optimization of Steady Suction for Disturbance Control on Infinite Swept Wings

[+] Author Affiliations
Jan O. Pralits

KTH, Stockholm, Sweden

Ardeshir Hanifi

Swedish Defense Research Agency, Stockholm, Sweden

Paper No. FEDSM2002-31055, pp. 1425-1430; 6 pages
doi:10.1115/FEDSM2002-31055
From:
  • ASME 2002 Joint U.S.-European Fluids Engineering Division Conference
  • Volume 1: Fora, Parts A and B
  • Montreal, Quebec, Canada, July 14–18, 2002
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3615-0 | eISBN: 0-7918-3600-2
  • Copyright © 2002 by ASME

abstract

Theory and results are presented on transition control using steady suction to suppress convectively unstable disturbances in a growing boundary layer on infinite swept wings. The suction profiles are computed using optimal control theory and the optimization process is gradient based. Here, the gradient is evaluated using the adjoint of the parabolized stability equations and the adjoint of the boundary layer equations. Results are presented for an application of the theory on a wing-profile designed for medium range commercial aircrafts.

Copyright © 2002 by ASME
Topics: Suction , Optimization , Wings

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