Ewch i’r prif gynnwys
Dr Chris Davies

Dr Chris Davies

Reader

Yr Ysgol Mathemateg

Email:
daviesc9@cardiff.ac.uk
Telephone:
+44 (0)29 2087 5531
Location:
M/2.46, 2nd Floor, Mathematics Institute, Senghennydd Road, Cardiff, CF24 4AG

My research is in the general field of theoretical and computational fluid dynamics.

Administrative duties

  • Cardiff MAGIC co-ordinator

Education

  • BSc (Hons) Applied Mathematics, University of Warwick.
  • PGCE Secondary School Mathematics Teaching, University of Birmingham.
  • MSc Mathematics, University of Warwick.
  • PhD Engineering, University of Warwick.

Previous experience

  • Intermediate Treatment Worker, Coventry & Warwickshire Social Services Departments.
  • Mathematics Tutor, Fircroft College of Adult Education, Birmingham.
  • Research Associate, School of Engineering, University of Warwick.
  • Research Fellow / Senior Lecturer, School of Mathematical and Information Sciences, Coventry University.

Aelodaethau proffesiynol

2019

2018

2017

2016

  • Davies, C., Thomas, C. and Ramage, A. 2016. Impulsively excited disturbances in non-uniform boundary layers. Presented at: 20th Australasian Fluid Mechanics Conference, University of Western Australia, Perth, Australia, December 2016Proceedings of the 20th Australasian Fluid Mechanics Conference. Australasian Fluid Mechanics Society

2015

2014

2013

2012

2011

2010

2009

2007

2006

  • Sen, P. K.et al. 2006. A wave-driver theory for vortical waves propagating across junctions between rigid and compliant walls. Presented at: 6th IUTAM Symposium on Laminar-Turbulent Transition, Bangalore, India, 2004 Presented at Govindarajan, R. ed.Sixth IUTAM Symposium on Laminar-Turbulent Transition: Proceedings of the Sixth IUTAM Symposium on Laminar-Turbulent Transition, Bangalore, India, 2004. Fluid Mechanics and Its Applications Vol. 78. Dordrecht: Springer pp. 195-200.
  • Davies, C. 2006. Computational studies of boundary-layer disturbance development. Presented at: IUTAM Symposium on One Hundred Years of Boundary Layer Research, Göttingen, Germany, 12-14 August 2004 Presented at Meier, G. E. A., Screenivasan, K. R. and Heinemann, H. eds.IUTAM Symposium on One Hundred Years of Boundary Layer Research: Proceedings of the IUTAM Symposium held at DLR-Göttingen, Germany, August 12-14, 2004. Solid Mechanics and Its Applications Vol. 129. Dordrecht: Springer pp. 325-334.
  • Kudar, K., Carpenter, P. W. and Davies, C. 2006. Klebanoff modes in swept boundary layers. Presented at: 6th IUTAM Symposium on Laminar-Turbulent Transition, Bangalore, India, 2004 Presented at Govindarajan, R. ed.Sixth IUTAM Symposium on Laminar-Turbulent Transition: Proceedings of the Sixth IUTAM Symposium on Laminar-Turbulent Transition, Bangalore, India, 2004. Fluid Mechanics and Its Applications Vol. 78. Dordrecht: Springer pp. 167-172.
  • Davies, C.et al. 2006. Disturbance development in boundary layers over compliant surfaces. Presented at: 6th IUTAM Symposium on Laminar-Turbulent Transition, Bangalore, India, 2004 Presented at Govindarajan, R. ed.Sixth IUTAM Symposium on Laminar-Turbulent Transition: Proceedings of the Sixth IUTAM Symposium on Laminar-Turbulent Transition, Bangalore, India, 2004. Fluid Mechanics and Its Applications Vol. 78. Dordrecht: Springer pp. 225-230.

2005

2003

2002

2001

I teach the following modules:

  • MA3301 Applied Non Linear Systems
  • MA0235 Elementary Fluid Dynamics

Research interests

My research is in the general field of theoretical and computational fluid dynamics. I am particularly interested in the following topics:

  • Hydrodynamic stability theory
  • Direct numerical simulation of boundary-layer and wake flow instabilities
  • Fluid-structure interaction, including the use of compliant surfaces for drag reduction
  • Laminar-turbulent transition mechanisms
  • Boundary-layer flow control, including the use of MEMs devices
  • Disturbance structures in turbulent boundary layers
  • Vorticity-based numerical methods and formulations.

One of the main achievements of my research to date has been the demonstration that, at least in theory, compliant surfaces may be designed so as to delay the transition between laminar and turbulent flow in a boundary layer to indefinitely large Reynolds numbers.

Another significant achievement was the derivation of a new velocity-vorticity formulation of the Navier-Stokes equations. This new formulation has proved to be particularly suitable for simulating the evolution and control of three-dimensional disturbances in boundary layers.

I have also shown that, contrary to what many other fluid dynamics researchers had presumed, the absolute instability that is found in the boundary layer over a rotating disk does not in fact give rise to any global form of linear instabilty.

Research group

Applied and Computational Mathematics Research Group

Research grants

European Commission

  • Aeromems : An investigation into the viability of MEMS technology for boundary-layer control on aircraft. 140,000 ECU, 1998-2000.
  • Aeromems II : Advanced aerodynamic flow control using MEMS. 190,000 ECU, 2002-2005.

Engineering and Physical Sciences Research Council

  • Near-wall flow structures in 3D turbulent boundary layers.
    £330,000 = £260,000 + £70,000, 2005-2008
    (Two separate grants, one held at the University of Warwick and the other at Cardiff University).
  • Novel passive techniques for reducing skin-friction drag.
    £186,000, 2007-2008.

All of the grants listed above were in collaboration with Prof P. W. Carpenter (deceased) and others from the Fluid Dynamics Research Centre, University of Warwick.

  • Numerical simulation of transitional boundary-layer flows.
    £5000, 2005-2006
  • Investigation of alternative drag-reduction strategies in turbulent boundary layers using wall forcing.
    £377,000, 2009-2012.
    In collaboration with Dr Duncan Lockerby and others from the Fluid Dynamics Research Centre, University of Warwick. (A linked grant, with a similar value, is also held by Prof. M. A. Leschziner and others at Imperial College London.)

Australian Research Council

  • The stability of unsteady flows in channels and pipes.
    $255,000, 2008-2010.
    In collaboration with Prof Andrew Bassom, University of Western Australia and Dr Peter Blennerhassett, University of New South Wales.

Royal Society

  • India-UK Science Networks.
    £3850, 2004.

Goruchwyliaeth gyfredol

Martina Cracco

Martina Cracco

Research student

Proffiliau allanol