We conduct applied as well as fundamental research in the general field of fluid flow and heat transfer combining computational simulations with experimental investigations.


Nuclear Thermal Hydraulics

We perform thermal hydraulic analysis to support safety cases, design modifications & operations; develop and improve computational tools, methods and correlations; and conduct fundamental research to better understand active and passive cooling phenomena in general.

Our key research areas are:

  • Advanced gas-cooled reactors (AGR) - those currently in operation in the UK.
  • Future reactor designs - the so-called Generation IV reactors, including SCWRs and SFRs. 
  • Fundamental and generic research on phenomena commonly encountered in many reactor designs.

Nuclear Thermal Hydraulics research


Our turbulence research focuses on non-equilibrium problems mostly based on computational simulations using DNS, LES and RANS. We also operate an unsteady flow facility equipped with LDA and PIV optical measurements.

Our key research topics are:

  • Bypass transition of transient turbulent flow
  • Flow laminarisation
  • Unsteady flow - experiments and modelling
  • Heat transfer to fluids at supercritical pressure

Turbulence research

Additional research topics

Methodology and resources

We develop and maintain a number of in-house computer codes and use various local and national high performance computing (HPC) resources. We operate an unsteady flow facility. 

  • CHAPSim - a direct numerical simulation code 
  • SWIRL - a conventional CFD (RANS) code
  • LBMCODE - Lattice Boltzmann Method (LBM)
  • SUFF - Sheffield Unsteady Flow Facility

Our resources

Flagship institutes

The University’s four flagship institutes bring together our key strengths to tackle global issues, turning interdisciplinary and translational research into real-world solutions.