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A generalized mean-field model of the natural and high-frequency actuated flow around a high-lift configuration

Published online by Cambridge University Press:  06 March 2009

DIRK M. LUCHTENBURG ,
BERT GÜNTHER ,
BERND R. NOACK ,
RUDIBERT KING  and
GILEAD TADMOR
DIRK M. LUCHTENBURG*
Affiliation:
Department of Fluid Dynamics and Engineering Acoustics, Berlin Institute of Technology MB1, Straße des 17. Juni 135, D-10623 Berlin, Germany
BERT GÜNTHER
Affiliation:
Department of Fluid Dynamics and Engineering Acoustics, Berlin Institute of Technology MB1, Straße des 17. Juni 135, D-10623 Berlin, Germany
BERND R. NOACK
Affiliation:
Department of Fluid Dynamics and Engineering Acoustics, Berlin Institute of Technology MB1, Straße des 17. Juni 135, D-10623 Berlin, Germany
RUDIBERT KING
Affiliation:
Department of Plant and Process Technology, Berlin Institute of Technology ER2-1, Hardenbergstraße 36a, D-10623 Berlin, Germany
GILEAD TADMOR
Affiliation:
Department of Electrical and Computer Engineering, Northeastern University, 440 Dana Research Building, Boston, MA 02115, USA
*
†Email address for correspondence: dirk.m.luchtenburg@tu-berlin.de
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Abstract

A low-dimensional Galerkin model is proposed for the flow around a high-lift configuration, describing natural vortex shedding, the high-frequency actuated flow with increased lift and transients between both states. The form of the dynamical system has been derived from a generalized mean-field consideration. Steady state and transient URANS (unsteady Reynolds-averaged Navier–Stokes) simulation data are employed to derive the expansion modes and to calibrate the system parameters. The model identifies the mean field as the mediator between the high-frequency actuation and the low-frequency natural shedding instability.

Type
Papers
Information
Journal of Fluid Mechanics , Volume 623 , 25 March 2009 , pp. 283 - 316
Copyright
Copyright © Cambridge University Press 2009

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References

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