Browsing by Author "McKernan, John"

Browsing by Author "McKernan, John"

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  • Control of plane poiseuille flow: a theoretical and computational investigation 
    McKernan, John (Cranfield University, 2006-04)
    Control of the transition of laminar flow to turbulence would result in lower drag and reduced energy consumption in many engineering applications. A spectral state-space model of linearised plane Poiseuille flow with wall ...
  • Design of poiseuille flow controllers using the method of inequalities 
    McKernan, John; Whidborne, James F.; Papadakis, George (Springer Science Business Media, 2009-02-01)
    This paper investigates the use of the method of inequalities (MoI) to design output-feedback compensators for the problem of the control of instabilities in a laminar plane Poiseuille flow. In common with many flows, ...
  • Kolmogorov-Chaitin complexity of digital controller implementations. 
    Whidborne, James F.; McKernan, John; Gu, Da-Wei (Springer Science Business Media, 2006-07-01)
    The complexity of linear, fixed-point arithmetic digital controllers is investigated from a Kolmogorov-Chaitin perspective. Based on the idea of Kolmogorov-Chaitin complexity, practical measures of complexity are ...
  • Linear feedback control of transient energy growth and control performance limitations in subcritical plane Poiseuille flow 
    Martinelli, F.; Quadrio, M.; McKernan, John; Whidborne, James F. (2011-01-31)
    Suppression of the transient energy growth in subcritical plane Poiseuille flow via feedback control is addressed. It is assumed that the time derivative of any of the velocity components can be imposed at the walls as ...
  • Linear quadratic control of plane Poiseuille flow-the transient behaviour. 
    McKernan, John; Whidborne, James F.; Papadakis, George (Taylor and Francis, 2007-12)
    This paper describes the design of optimal linear quadratic controllers for single wavenumber-pair periodic 2-D disturbances in plane Poiseuille flow, and subsequent verification using a finite-volume full Navier-Stokes ...
  • A linear state-space representation of plane Poiseuille flow for control design: a tutorial. 
    McKernan, John; Papadakis, George; Whidborne, James F. (Inderscience Publishers, 2006-01-01)
    A method for the incorporation of wall transpiration into a model of lin- earised plane Poiseuille °ow is presented, with the aim of producing a state- space model suitable for the development of feedback control of ...
  • Minimizing transient energy growth in plane Poiseuille flow 
    Whidborne, James F.; McKernan, John; Papadakis, George (Professional Engineering Publishing, 2008-01-01)
    The feedback control of laminar plane Poiseuille flow is considered. In common with many flows, the dynamics of plane Poiseuille flow is very non-normal. Consequently, small perturbations grow rapidly with a large transient ...
  • On minimizing maximum transient energy growth 
    Whidborne, James F.; McKernan, John; Steer, Anthony J. (2005-06-27)
    The problem of minimizing the maximum transient energy growth is considered. This problem has importance in some fluid flow control problems and other classes of non-linear systems. Conditions for the existence of ...
  • On the Minimization of Maximum Transient Energy Growth. 
    Whidborne, James F.; McKernan, John (IEEE Institute of Electrical and Electronics, 2007-09-01)
    The problem of minimizing the maximum transient energy growth is considered. This problem has importance in some fluid flow control problems and other classes of nonlinear systems. Conditions for the existence of static ...