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 a member of the Editorial Board of Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences.

Areas of expertise:

Buoyancy-driven flows

Stratified turbulence and mixing


Turbulent plumes and jets

Flow energetics

Flows in the built environment

Ocean dynamics

Teaching (2019/20):

CIVE40008 Fluid Mechanics

CIVE40010 Energy and Environmental Engineering

CIVE97159 Fluid Mechanics for the Built Environment

CIVE97063 Buoyancy-driven Flows

MECH97037 Methods for the Analysis of Energy Systems (MSc in Sustainable Energy Futures)

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