Estimation techniques in a turbulent flow field

Julie M. Ausseur, Jeremy T. Pinier, Mark N. Glauser

Research output: Chapter in Book/Entry/PoemConference contribution

1 Scopus citations


Part of our continuous efforts to implement an effective closed-loop feedback control of the flow over a NACA 4412 airfoil is the obtention of an accurate estimate of the actual flow state. An elaborate controller combines both prediction and measurement techniques to obtain a precise estimation of the control variable. In this paper we focus on the measurement process. We first present the different candidates for the control variable, and describe the low-dimensional techniques employed. We then focus on the estimation methods that will be incorporated in the controller in order to access the state variable from the pressure real-time measurements. The investigation of the dynamics in the flow field and the correlations between the variables at stake reveal the benefits brought by a spectral estimation approach.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - 37th AIAA Fluid Dynamics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Number of pages13
ISBN (Print)1563478978, 9781563478970
StatePublished - 2007
Event37th AIAA Fluid Dynamics Conference - Miami, FL, United States
Duration: Jun 25 2007Jun 28 2007

Publication series

NameCollection of Technical Papers - 37th AIAA Fluid Dynamics Conference


Other37th AIAA Fluid Dynamics Conference
Country/TerritoryUnited States
CityMiami, FL

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Aerospace Engineering


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