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: Chapter in Book/Report/Conference proceedingConference contribution

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)
Title of host publication4th International Symposium on Turbulence and Shear Flow Phenomena
Pages105-109
Number of pages5
Volume1
StatePublished - 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

Fingerprint

Airfoils
Turbulent flow
Feedback control
Decomposition
Three term control systems
Pressure measurement
Time measurement
Velocity measurement
Flow fields
Actuators
Derivatives
Controllers

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

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. In 4th International Symposium on Turbulence and Shear Flow Phenomena (Vol. 1, pp. 105-109)

Closed-loop feedback control of the turbulent flow over a NACA-4412 airfoil. / Ausseur, Julie M.; Pinier, Jeremy T.; Glauser, Mark N; Higuchi, Hiroshi.

4th International Symposium on Turbulence and Shear Flow Phenomena. Vol. 1 2005. p. 105-109.

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

Ausseur, JM, Pinier, JT, Glauser, MN & Higuchi, H 2005, Closed-loop feedback control of the turbulent flow over a NACA-4412 airfoil. in 4th International Symposium on Turbulence and Shear Flow Phenomena. vol. 1, pp. 105-109, 4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4, Williamsburg, VA, United States, 6/27/05.
Ausseur JM, Pinier JT, Glauser MN, Higuchi H. Closed-loop feedback control of the turbulent flow over a NACA-4412 airfoil. In 4th International Symposium on Turbulence and Shear Flow Phenomena. Vol. 1. 2005. p. 105-109
Ausseur, Julie M. ; Pinier, Jeremy T. ; Glauser, Mark N ; Higuchi, Hiroshi. / Closed-loop feedback control of the turbulent flow over a NACA-4412 airfoil. 4th International Symposium on Turbulence and Shear Flow Phenomena. Vol. 1 2005. pp. 105-109
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