Nonlinear control of incompressible fluid flow: Application to Burgers' equation and 2D channel flow

James Baker, Antonios Armaou, Panagiotis D. Christofides

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

This paper proposes a methodology for the synthesis of nonlinear finite-dimensional feedback controllers for incompressible Newtonian fluid flows described by two-dimensional Navier-Stokes equations. Combination of Galerkin's method with approximate inertial manifolds is employed for the derivation of low-order ordinary differential equation (ODE) systems that accurately describe the dominant dynamics of the flow. These ODE systems are subsequently used as the basis for the synthesis of nonlinear output feedback controllers that guarantee stability and enforce the output of the closed-loop system to follow the reference input asymptotically. The method is successfully used to synthesize nonlinear finite-dimensional output feedback controllers for the Burgers' equation and the two-dimensional channel flow that enhance the convergence rate to the spatially uniform steady-state and the parabolic velocity profile, respectively. The performance of the proposed controllers is successfully tested through simulations and is shown to be superior to the one of linear controllers.

Original languageEnglish (US)
Pages (from-to)230-255
Number of pages26
JournalJournal of Mathematical Analysis and Applications
Volume252
Issue number1
DOIs
StatePublished - Dec 1 2000

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Channel Flow
Nonlinear Control
Channel flow
Burgers Equation
Incompressible Flow
Incompressible Fluid
Fluid Flow
Flow of fluids
Controller
Controllers
Output Feedback
Feedback
Ordinary differential equations
Ordinary differential equation
Approximate Inertial Manifolds
Synthesis
Newtonian Fluid
Galerkin methods
Velocity Profile
Galerkin Method

All Science Journal Classification (ASJC) codes

  • Analysis
  • Applied Mathematics

Cite this

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Nonlinear control of incompressible fluid flow : Application to Burgers' equation and 2D channel flow. / Baker, James; Armaou, Antonios; Christofides, Panagiotis D.

In: Journal of Mathematical Analysis and Applications, Vol. 252, No. 1, 01.12.2000, p. 230-255.

Research output: Contribution to journalArticle

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