Mr Duncan Robin Hewitt

 

Career

• 2010-present: Ph.D, Applied Mathematics, University of Cambridge.
• 2009-2010: Part III Mathematics, (M.Math), Sidney Sussex College, University of Cambridge
• 2006-2009: B.A. Mathematics, Sidney Sussex College, University of Cambridge
   

Research

Duncan is a member of the Institute of Theoretical Geophysics, in the Department of Applied Mathematics and Theoretical Physics. He is studying for a PhD under the supervision of Professor John Lister and Dr. Jerome Neufeld, on the topic of convection in porous media.  There has been renewed interest in this field due to it's importance in the long-term storage of geologically sequestered carbon dioxide in saline aquifers; weak dissolution of sequestered CO_2 (which is buoyant) into the host brine results in the formation of a dense aqueous CO_2 solution, which can lead to downward convection and longer-term secure storage.

 Selected Publications

• Hewitt, D.R., Neufeld, J.A., and Lister, J.R. Ultimate regime of high-Rayleigh-number convection in a porous medium, Phys. Rev. Lett. 2012 108 (224503)
• Hewitt, D.R., Neufeld, J.A., and Lister, J.R. Convective shutdown in a porous medium at high Rayleigh number, J. Fluid Mech. 2013 719 (551-586)
• Hewitt, D.R., Balmforth,N.J. Thixotropic gravity currents, J. Fluid Mech. 2013 (under review)