Dr Spiridon Siouris

Dr. Spiridon Siouris, MRAeS, MAIAA
Tel: 0114 215 7245
Email:  s.siouris@sheffield.ac.uk


Dr. Spiridon Siouris is a research fellow in aviation fuel and lubricant thermal stability in the Low Carbon Combustion Centre/Energy2050 group. He studied Mechanical Engineering at The University of Sheffield where he graduated with an MEng in 2004 and received best thesis award from IMechE where he studied aerodynamic optimisation of blended wing bodies. He carried out PhD studies at Sheffield in numerical modelling and experimental investigation of aviation lubricant thermal degradation and deposition, including reaction rate optimisation.

Since the completion of his PhD, Spiridon has worked in several research projects in the Low Carbon Combustion/Energy 2050 and Aerodynamics groups, dealing with aerospace fuel and lubricant degradation, aerospace elastomers, turbulence modelling, aerodynamic flow control, and plasma modelling. He has worked closely with several academic institutions and industrial partners such as Rolls Royce plc and Airbus. Through these projects, Spiridon has developed expertise in large scale experimental testing for aviation gas turbines, and numerical modelling for Computational Fluid Dynamics and aerodynamics. Spiridon has also been involved in teaching activities for undergraduates and postgraduates, and also in the delivery of Computational Fluid Dynamics modules in Chemical and Biological Engineering between 2016 and 2018.

Research Interests

  • Aviation fuel and lubricant thermal stability experimental methods
  • Large scale experimental testing for aviation fuel systems
  • Modelling chemical thermal degradation of fuel and lubricant systems of aviation gas turbines
  • Deposition modelling in aerospace valves and fuel injectors
  • Numerical optimisation, including chemical reaction rate parameters
  • High performance computing
  • Aerodynamic optimisation
  • Turbulence modelling
  • Aerodynamic flow control, including plasma based actuators

Research Projects

  • Modelling of fuel deposition in aviation gas turbine injectors, Rolls Royce plc/EU CleanSky, since 2017
  • Large scale investigation of aviation fuel thermal stability and fuel system performance, Rolls Royce plc, 2017-2018
  • Large scale investigation of aviation fuel thermal stability and fuel system performance, ATI SILOET II, Rolls Royce plc/Innovate UK, 2014-2017
  • Modelling of active flow control devices for aerodynamic drag reduction and separation control, MARS, EU FP7, 2012-2013
  • Experimental and numerical investigation of lubricant thermal stability, ELUBSYS, EU FP7, 2010-2012
  • Development of optical temperature and oscillation measurement system for industrial gas turbine combustions, RWE/Innogy, 2003-2004

Research Grants

  • Investigation of wall shear stresses on impinging jets, SURE, University of Sheffield, £1.5k, PI, 2018
  • Continuation of fuel lifing and thermal stability experiments and modelling, Rolls Royce plc, £135k, Co-I, 2017
  • Fuel injector cocking and autoxidation prediction (FINCAP), EC Horizon 2020, £826k, Co-I, 2017-2020

Teaching Experience

  • CPE402 Computational Fluid Dynamics for Chemical and Biological Engineering
  • CPE6020 Computational Fluid Dynamics for Chemical and Biological Engineering

Professional Memberships

  • Member of the Royal Aerospace Society (RaeS)
  • Member of the American Institute of Aeronautics and Astronautics (AIAA)

Journal articles

Conference proceedings papers

  • Lu G, Siouris S, Yan Y, Wilson CW & Cornwell S (2004) Concurrent measurement of combustion oscillation and temperature of multiple flames in a simulated gas turbine. Conference Record – IEEE Instrumentation and Measurement Technology Conference, Vol. 2 (pp 1112-1115)