Career
- 2017- date: DAMTP, Cambridge University
- 1996-2017: Mathematics, Bristol University
- 1992-1996: Mathematics, Newcastle University
- 1992 : PhD, MIT
Research
General fluid mechanics: the Navier-Stokes equations (nonlinear dynamics, transition and turbulence); geophysical and astrophysical fluid mechanics (e.g. convection; stably stratified flows; tidal, precessional and librational motion of planetary interiors and subsurface oceans; accretion disks);
Selected Publications
- see homepage (www.damtp.cam.ac.uk/user/rrk26)
Publications
Energy dissipation rate limits for flow through rough channels and tidal flow across topography
– Journal of Fluid Mechanics
(2016)
808,
562
(doi: 10.1017/jfm.2016.650)
A new method for isolating turbulent states in transitional stratified plane Couette flow
– Journal of Fluid Mechanics
(2016)
808,
r1
(doi: 10.1017/jfm.2016.627)
Connections between centrifugal, stratorotational, and radiative instabilities in viscous Taylor-Couette flow
– Physical review. E
(2016)
94,
043103
(doi: 10.1103/physreve.94.043103)
Using stratification to mitigate end effects in quasi-Keplerian Taylor-Couette flow
– Journal of Fluid Mechanics
(2016)
791,
608
(doi: 10.1017/jfm.2016.44)
Instability driven by boundary inflow across shear: a way to circumvent Rayleigh’s stability criterion in accretion disks?
– Journal of Fluid Mechanics
(2015)
784,
619
(doi: 10.1017/jfm.2015.613)
Time-stepping approach for solving upper-bound problems: Application to two-dimensional Rayleigh-Bénard convection
– Physical review. E, Statistical, nonlinear, and soft matter physics
(2015)
92,
043012
(doi: 10.1103/physreve.92.043012)
Recurrent flow analysis in spatiotemporally chaotic 2-dimensional Kolmogorov flow
– Physics of Fluids
(2015)
27,
045106
(doi: 10.1063/1.4917279)
Localization in a spanwise-extended model of plane Couette flow
– Physical review. E, Statistical, nonlinear, and soft matter physics
(2015)
91,
043005
(doi: 10.1103/physreve.91.043005)
Fully localised nonlinear energy growth optimals in pipe flow
– Physics of Fluids
(2015)
27,
064102
(doi: 10.1063/1.4922183)
An optimization approach for analysing nonlinear stability with transition to turbulence in fluids as an exemplar
– Reports on progress in physics. Physical Society (Great Britain)
(2014)
77,
085901
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