Stabilising control laws for the incompressible Navier-Stokes equations using sector stability theory

A. S. Sharma, D. J.N. Limebeer, B. J. McKeon, J. F. Morrison

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Citations (Scopus)

Abstract

A method for nonlinear global stabilisation of the incompressible Navier-Stokes equations is presented and used to eliminate transient growth in linearly stable Poiseuille flow for the case of full-field actuation and sensing. In the absence of complete velocity field sensing and full actuation the controller synthesis procedure gives a controller that minimises the the attainable perturbation energy over all disturbances and thus maximises the disturbance threshold for transition to occur. The control laws are found using the theory of positive real systems, originating in the control systems community. It is found that a control law making the linearised part of the perturbed Navier-Stokes equations positive real, provides nonlinear global stability. A state-space synthesis procedure is presented that results in two game-theoretic algebraic Riccati equations.

Original languageEnglish
Title of host publicationCollection of Technical Papers - 3rd AIAA Flow Control Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Pages1711-1723
Number of pages13
ISBN (Print)1563478137, 9781563478130
DOIs
Publication statusPublished - 2006
Externally publishedYes
Event3rd AIAA Flow Control Conference - San Francisco, CA, United States
Duration: 5 Jun 20068 Jun 2006

Publication series

NameCollection of Technical Papers - 3rd AIAA Flow Control Conference
Volume3

Conference

Conference3rd AIAA Flow Control Conference
Country/TerritoryUnited States
CitySan Francisco, CA
Period5/06/068/06/06

ASJC Scopus subject areas

  • General Engineering

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