Closed-loop feedback control of the turbulent flow over a NACA-4412 airfoil

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

Research output: Contribution to conferencePaper

Abstract

We are developing methods to predict the dynamics of the flow field above a NACA-4412 airfoil using real-time measurements of the pressure from the surface of the airfoil only. Through Proper Orthogonal Decomposition (POD) and modified Linear Stochastic Measurement (mLSM) low-dimensional techniques (Lumley (1967), Adrian (1975), Taylor & Glauser (2004)) these pressure measurements are coupled to Particle Image Velocimetry (PIV) data of the flow to estimate the time dependent coefficients describing the flow. Based on a least-squares technique applied to the POD spatial modes, we obtain a system of ODEs that are solved to get the time-evolution of the POD coefficients, whereby an estimate of the evolution equation of the flow is obtained. This low-dimensional estimated plant will be used to explore different Proportional, Integral & Derivative (PID) control parameters and will enable us to implement a controller of the flow state above the airfoil using leading-edge zero net-mass flow actuators while pitching the airfoil.

Original languageEnglish (US)
Pages105-109
Number of pages5
StatePublished - Dec 1 2005
Event4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4 - Williamsburg, VA, United States
Duration: Jun 27 2005Jun 29 2005

Other

Other4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4
CountryUnited States
CityWilliamsburg, VA
Period6/27/056/29/05

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

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  • Cite this

    Ausseur, J. M., Pinier, J. T., Glauser, M. N., & Higuchi, H. (2005). Closed-loop feedback control of the turbulent flow over a NACA-4412 airfoil. 105-109. Paper presented at 4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4, Williamsburg, VA, United States.