Imperial College London


Faculty of EngineeringDepartment of Civil and Environmental Engineering

Chair in Environmental Fluid Mechanics



+44 (0)20 7594




332Skempton BuildingSouth Kensington Campus





I am interested in buoyancy-driven flows in natural, industrial and built environments, motivated by the important role this field of research has to play in understanding and responding to societal challenges concerning climate, energy and our environment.

I joined the Fluid Mechanics Section in the Department of Civil and Environmental Engineering at Imperial College London in 2016, following previous academic appointments in Australia and the UK. I hold BE and ME degrees (Auckland) and a PhD degree (Cambridge).

I am also Director of Education for the Energy Futures Lab at Imperial.

Areas of expertise:

Buoyancy-driven flows

Stratified turbulence and mixing


Turbulent plumes and jets

Flow energetics


CI1-140 Fluid Mechanics

CI9-FM-01 Fluid Mechanics Fundamentals

CI9-FM-05 Buoyancy-driven Flows

SEF02 Methods for the Analysis of Energy Systems

SEF04 Debating and Non-Technical/Soft Skills Development

Selected Publications

Journal Articles

Hughes GO, Linden PF, 2016, Mixing efficiency in run-down gravity currents, Journal of Fluid Mechanics, Vol:809, ISSN:0022-1120, Pages:691-704

Hughes GO, 2016, Inside the head and tail of a turbulent gravity current, Journal of Fluid Mechanics, Vol:790, ISSN:0022-1120

Wykes MSD, Hughes GO, Dalziel SB, 2015, On the meaning of mixing efficiency for buoyancy-driven mixing in stratified turbulent flows, Journal of Fluid Mechanics, Vol:781, ISSN:0022-1120, Pages:261-275

Gayen B, Griffiths RW, Hughes GO, 2014, Stability transitions and turbulence in horizontal convection, Journal of Fluid Mechanics, Vol:751, ISSN:0022-1120, Pages:698-724

Gayen B, Hughes GO, Griffiths RW, 2013, Completing the Mechanical Energy Pathways in Turbulent Rayleigh-Bénard Convection, Physical Review Letters, Vol:111, ISSN:1079-7114

Hughes GO, Gayen B, Griffiths RW, 2013, Available potential energy in Rayleigh-Benard convection, Journal of Fluid Mechanics, Vol:729, ISSN:0022-1120

Gayen B, Griffiths RW, Hughes GO, et al., 2013, Energetics of horizontal convection, Journal of Fluid Mechanics, Vol:716, ISSN:0022-1120

Hughes GO, Griffiths RW, 2008, Horizontal convection, Annual Review of Fluid Mechanics, Vol:40, ISSN:0066-4189, Pages:185-208

More Publications