Simon Illingworth

Department of Mechanical Engineering
University of Melbourne
VIC 3010, Australia

T: +61 (0)3 8344 7957



I am a Senior Lecturer (Assistant Professor) in the Department of Mechanical Engineering at the University of Melbourne. I received my PhD from the University of Cambridge, and an MEng in Aeronautical Engineering from the University of Bristol. I was a postdoctoral researcher at the University of Cambridge, and I also held a JSPS research fellowship at Keio University in Japan. I currently hold a Discovery Early Career Researcher Award (DECRA, 2015-2018).

Research interests

My research involves applying methods from dynamical systems and control theory to flow instabilities. I apply these methods to problems in fluid mechanics (shear flows); in thermoacoustics (combustion oscillations); and in aeroacoustics (cavity oscillations).

PhD opportunities

I am always interested in receiving PhD applications from motivated students with a highly-ranked Masters degree from a top university. More details on the PhD programme at the University of Melbourne can be found here. For an idea of the type of projects you could work on, see my publications and videos.


  • Jin, B., Illingworth, S.J. & Sandberg, R.D. (2020)
    Feedback control of vortex shedding using a resolvent-based modelling approach
    J. Fluid Mech., 897, A26 doi

  • Jelly, T.O., Chin, R.C., Illingworth, S.I., Monty, J.P., Marusic, I. & Ooi, A. (2020)
    A direct comparison of pulsatile and non-pulsatile rough-wall turbulent pipe flow
    J. Fluid Mech., 895, R3 doi

  • Illingworth, S.J. (2020)
    Streamwise-constant large-scale structures in Couette and Poiseuille flows
    J. Fluid Mech., 889, A13 doi

  • Gong, G., Monty, J.P. & Illingworth, S.J. (2020)
    Model-based estimation of vortex shedding in unsteady cylinder wakes
    Phys. Rev. Fluids, 5, 023901 doi

  • Cheng, Z., Jelly, T.O., Illingworth, S.J., Marusic, I. & Ooi, A.S.H. (2020)
    Forcing frequency effects on turbulence dynamics in pulsatile pipe flow
    Int. J. Heat Fluid Flow 108538 doi

  • Nardini, M., Illingworth, S. J. & Sandberg, R. D. (2019)
    Nonlinear reduced-order modeling of the forced and autonomous aeroelastic response of a membrane wing using Harmonic Balance methods
    J. Fluids Structures doi

  • Madhusudanan, A., Illingworth, S. J. & Marusic, I. (2019)
    Coherent large-scale structures from the linearized Navier-Stokes equations
    J. Fluid Mech. 873, 89-109 doi

  • Vadarevu, S. B., Symon, S., Illingworth, S. J. & Marusic, I. (2019)
    Coherent structures in the linearized impulse response of turbulent channel flow
    J. Fluid Mech. 863, 1190-1203 doi

  • Oehler, S. F. & Illingworth, S. J. (2018)
    Sensor and actuator placement trade-offs for a linear model of spatially developing flows
    J. Fluid Mech. 854, 34-55 doi

  • Illingworth, S. J., Monty, J. P. & Marusic, I. (2018)
    Estimating large-scale structures in wall turbulence using linear models
    J. Fluid Mech. 842, 146-162 doi

  • Nardini, M., Illingworth, S. J. & Sandberg, R. D. (2018)
    Reduced-order modeling and feedback control of a flexible wing at low Reynolds numbers
    J. Fluids Structures 79, 137-157 doi

  • Illingworth, S. J. (2016)
    Model-based control of vortex shedding at low Reynolds numbers
    Theor. Comput. Fluid Dyn. 30, 429-448 doi

  • Orchini, A., Illingworth, S. J. & Juniper, M. P. (2015)
    Frequency domain and time domain analysis of thermoacoustic oscillations with wave-based acoustics.
    J. Fluid Mech. 775, 387-414 doi

  • Illingworth, S. J., Naito, H. & Fukagata, K. (2014)
    Active control of vortex shedding: An explanation of the gain window.
    Phys. Rev. E. 90, 043014 doi

  • Waugh, I. C., Illingworth, S. J. & Juniper, M. P. (2013)
    Matrix-free continuation of limit cycles for bifurcation analysis of large thermoacoustic systems.
    J. Comput. Phys. 240, 225-247 doi

  • Illingworth, S. J. and Waugh, I. C. & Juniper, M. P. (2013)
    Finding thermoacoustic limit cycles for a ducted Burke-Schumann flame.
    Proc. Combust. Inst. 34, 911-920 doi

  • Illingworth, S. J., Morgans, A. S. & Rowley, C. W. (2012)
    Feedback control of cavity flow oscillations using simple linear models.
    J. Fluid Mech. 709, 223-248 doi

  • Illingworth, S. J., Morgans, A. S. & Rowley, C. W. (2011)
    Feedback control of flow resonances using balanced reduced-order models.
    J. Sound Vib. 330, 1567-1581 doi

  • Illingworth, S. J. & Morgans, A. S. (2010)
    Advances in feedback control of the Rijke tube thermoacoustic instability.
    Int. J. Flow Contr. 2(4), 197-218 doi

  • Illingworth, S. J. & Morgans, A. S. (2010)
    Adaptive feedback control of combustion instability in annular combustors.
    Combust. Sci. Technol. 182(2), 143-164 doi