In Scotland

I am a Research Fellow at Gonville and Caius College, and a member of the Department of Applied Mathematics and Theoretical Physics at the Univertisty of Cambridge. Previously, I was a Killam Postdoctoral Research Fellow and PIMS Postdoctoral Fellow (honorary) in the Department of Mathematics at the University of British Columbia, Vancouver (2014-2015). I hold a Ph.D. in Applied Mathematics from the University of Cambridge (Sidney Sussex College, 2014); my Ph.D. thesis is entitled 'High Rayleigh number Convection in a Porous Medium' and was supervised by John Lister and Jerome Neufeld.

My C.V. can be found here.

Teaching: my course website for MATH256, taught at UBC in 2014, can be found here.

Research interests

I am interested in fluid mechanics and mathematical modelling. Areas in which I have worked and topics of current research interest include:

  • Convection in porous media, and CO2 sequestration

  • Double-diffusive convection in porous media

  • Poro-elasticity and flow through/of deformable media: applications in geophysics (subsidence, sub-glacial till, viscous compaction in the mantle) and industry (pulp and paper)

  • Viscoplastic fluids: flow through porous media; flow in slots; viscoplastic boundary layers; viscoplastic locomotion

  • Thixotropy and mud

  • Mixing in porous media

Publications

  1. Hewitt, D.R., and Balmforth, N.J., Taylor's swimming sheet in a yield stress fluid, Journal of Fluid Mechanics, 2017 (in press) [pdf]

  2. Hewitt, D.R., and Lister, J.R., Stability of columnar convection in a three-dimenional porous medium, Journal of Fluid Mechanics, 2017 (in press) [pdf]

  3. Kvick, M., Martinez, D.M., Hewitt, D.R., and Balmforth, N.J., Imbibition with swelling: Capillary rise in thin deformable porous media, Physical Review Fluids, 2017 2 (074001) [pdf]

  4. Balmforth, N.J., Craster, R.V., Hewitt, D.R., Hormozi, S., and Maleki, A., Viscoplastic boundary layers, Journal of Fluid Mechanics, 2017 813 (929-954) [pdf]

  5. Liu, Y., Balmforth, N.J., Hormozi, S. and Hewitt, D.R., Two-dimensional viscoplastic dambreaks, Journal of Non-Newtonian Fluid Mechanics, 2016 238 (65-79) [pdf]

  6. Hewitt, D.R., Paterson, D.T., Balmforth, N.J., and Martinez, D.M. Dewatering of fibre suspensions by pressure filtration, Physics of Fluids, 2016 28 (063304). [pdf]

  7. Hewitt, D.R., Nijjer, J.S., Neufeld, J.A., and Worster, M.G. Flow-induced compaction of a deformable porous medium, Physical Review E, 2016 93, 023116 [pdf]

  8. Hewitt, D.R., Balmforth, N.J., Dasani, M., and Martinez, D.M. Obstructed and channelized viscoplastic flow in a Hele-Shaw cell, Journal of Fluid Mechanics, 2016 790 (173-204) [pdf]

  9. Hewitt, D.R., Neufeld, J.A., and Balmforth, N.J. Shallow, gravity-driven flow in a poro-elastic layer, Journal of Fluid Mechanics, 2015 778 (335-360) [pdf]

  10. Hewitt, D.R., Neufeld, J.A., and Lister, J.R. High Rayleigh number convection in a porous medium containing a thin low-permeability layer, Journal of Fluid Mechanics, 2014 756 (844-869) [pdf]

  11. Hewitt, D.R., Neufeld, J.A., and Lister, J.R. High Rayleigh number convection in a three-dimensional porous medium, Journal of Fluid Mechanics, 2014 748 (879-895) [pdf]

  12. Hewitt, D.R., Neufeld, J.A., and Lister, J.R. Stability of columnar convection in a porous medium, Journal of Fluid Mechanics, 2013 737 (205-231) [pdf]

  13. Hewitt, D.R., and Balmforth, N.J. Thixotropic gravity currents, Journal of Fluid Mechanics, 2013 727 (56-82) [pdf]

  14. Hewitt, D.R., Neufeld, J.A., and Lister, J.R. Convective shutdown in a porous medium at high Rayleigh number, Journal of Fluid Mechanics, 2013 719 (551-586) [pdf] (see also 'Focus on Fluids' review article by David Pritchard, and Front-cover picture)

  15. Hewitt, D.R., Neufeld, J.A., and Lister, J.R. Ultimate regime of high Rayleigh number convection in a porous medium, Physical Review Letters, 2012 108 (224503) [pdf]

Contacts

email: drh39 'at' cam.ac.uk
Office: H1.07
Address: Department of Applied Mathematics and Theoretical Physics,
Centre for Mathematical Sciences, Wilberforce Road, Cambridge CB3 0WA
Telephone: +44 1223 765000