Rich Kerswell

	School of Mathematics University Walk Bristol University Bristol BS8 1TW, U.K.
	R.R.Kerswell@bris.ac.uk Tel: +44-117-928-7966 Fax: +44-117-928-7999

Research Interests

The Navier-Stokes equations (nonlinear dynamics, transition and turbulence)
Geophysical and astrophysical fluid mechanics (e.g. magnetic field generation,
convecting and stably-stratified flows, rapidly-rotating systems)
Granular media (dense transient flows)

Meetings

IUTAM Symposium `Non-Uniqueness of Solutions to the Navier-Stokes Equations and their Connection with Laminar-Turbulent Transition'
August 9-11, 2004, Bristol with Proceedings.
BAMC 2007, April 17- 19, 2007, Bristol.
Isaac Newton Programme `The Nature of High Reynolds Turbulence' 26 August -19 December 2008, Cambridge.
International Centre for Mathematical Sciences (ICMS) `Analysis of Fluid Stability' 25 June - 3 July 2009, Edinburgh.

Papers:

Archive:
Kerswell, R.R. ``The instability of precessing flow'' Geophys. Astrophys. Fluid Dynam. 72, 107-144, 1993.
Kerswell, R.R. ``Tidal excitation of hydromagnetic waves and their damping in the Earth'' J. Fluid Mech. 274, 194-241, 1994.
Wedin, H. & Kerswell, R.R. ``Exact coherent structures in pipe flow: travelling wave solutions'' (colour version) J. Fluid Mech. 508, 333-371, 2004.
Kerswell, R.R. & Tutty, O.R. ``Recurrence of travelling waves in transitional pipe flow'' (colour version) J. Fluid Mech. 584, 69-102, 2007.

Recent:
Willis, A.P. & Kerswell, R.R. ``Coherent structures in localised and global pipe turbulence'' Phys. Rev. Lett. 100, 124501, 2008.
Lacaze, L., Phillips, J.C. & Kerswell, R.R. ``Planar collapse of a granular column: experiments and discrete element simulations'' Phys. Fluids 20, 063302, 2008.
Willis, A.P., Peixinho, J., Kerswell, R.R. & Mullin, T. "Experimental and theoretical progress in pipe flow transition" Phil. Trans. Roy. Soc. A 366, 2671-2684, 2008.
Duguet, Y., Willis, A.P. & Kerswell, R.R. ``Transition in pipe flow: the saddle structure on the boundary of turbulence'' J. Fluid Mech. 613, 255-274, 2008.
Duguet, Y., Pringle, C.C.T. & Kerswell, R.R. ``Relative periodic orbits in transitional pipe flow'' Phys. Fluids 20, 114102, 2008.
Willis, A.P. & Kerswell, R.R. ``Turbulent dynamics of pipe flow captured in a reduced model: puff relaminarisation and localised `edge' states'' J. Fluid Mech. 619, 213-233, 2009.
Pringle, C.C.T., Duguet, Y. & Kerswell, R.R. ``Highly symmetric travelling waves in pipe flow'' Phil. Trans. Roy. Soc. A 367, 457-472, 2009.
Lacaze, L. & Kerswell, R.R. ``Axisymmetric granular collapse: a transient 3D flow test of visco-plasticity'' Phys. Rev. Lett. 102, 108305, 2009.
Tang, W., Caulfield, C.P. & Kerswell, R.R. ``A prediction for the optimal stratification for turbulent mixing'' J. Fluid Mech. 634, 487-497, 2009.

Postdocs:

Ashley Willis, EPSRC-funded 2005-2008 (now LadHyx, Ecole Polytechnique, Paris)
Yohann Duguet, Marie-Curie Fellow 2006-2008 (now KTH, Stockholm and will be CNRS, LIMSI, Paris)
Laurent Lacaze, Marie-Curie Fellow 2006-2008 (now CNRS, IMFT, Toulouse)
Mark Woodhouse , Renishaw & North Bristol NHS Trust funded 2007-2009

Graduate students:

Darren Mason ``Nonlinear Evolution of the Elliptical Instability'' 1995-1999
(now working at IPL in software development).
Denise Cooper (née Barnes)``Finite Amplitude Solutions to Rotating Pipe Flow'' 1996-2000
(senior software engineer at Radan Computational Ltd in CAD).
Robert Mason ``Nonlinear Dynamics of Precessional Instabilities'' 1998-2001
(did a postdoc in Earth Sciences at Bristol University with Prof. S. Sparks and is now working at Serco Assurance in scientific consultancy).
Stephen Plasting ``Turbulence has its Limits: A Priori Estimates of Transport Properties in Turbulent Fluid Flows'' 2000-2004
(followed by a postdoc at Scripps Oceanographic Institute, San Diego with Prof. W.R. Young and then a move to finance in London...).
Hakan Wedin ``Self-Sustaining Processes in Pressure-Driven Flows'' 2001-2004
(followed by postdocs at Kyoto University with Prof. M. Nagata and now Genoa University with Prof. A. Bottaro).
Chris Pringle ``Transition in Shear flows'' 2005-present
Helen Sweeney ``Dense Granular Rheology'' 2008-present