Dr Robert J Howell

BEng, PhD (Cantab)

Dr Robert HowellSenior Lecturer in Experimental Aerodynamics

Assistant Faculty Director of Learning and Teaching (Enhancement)

Department of Mechanical Engineering
RC12 Mappin Mining Block
Mappin Street
Sheffield
S1 3JD
UK


Telephone: +44(0)114 2227725
Fax: +44(0)114 2227890

email : r.howell@sheffield.ac.uk


Profile

Dr Howell studied for his PhD at the Whittle Laboratory at the University of Cambridge. His research, in collaboration with Rolls-Royce, focused on the unsteady aerodynamics of low-pressure turbines. Rob continued to work in the area of turbine aerodynamics at the Whittle Lab, before joining Siemens Industrial Turbomachinery in 2002. At Siemens he worked in many areas of gas turbine aerodynamics and heat transfer including investigating shrouded turbine leakage flows and exhaust diffuser performance.

In 2005, Rob joined The University of Sheffield, as a Lecturer in Experimental Aerodynamics.

Research Interests

Dr Howell runs a research group with PhD students researching areas such as:

  • Wind turbine performance and aerodynamics (effects of unsteady winds, gust response and turbine start-up performance)
  • Tidal turbine performance and tidal farm layout
  • Aircraft wing stall control using synthetic jets and other forms of control

Wind Tunnel and Experimental Facilities available:

Dr Howell designed and had built a new low speed wind tunnel for research and teaching purposes. His research group has state of the art experimental facilities available including PIV, LDV and three highly sensitive load cells for the measurement of aerodynamic forces.

The wind tunnel is available for consultancy work.

Large Scale Wind Tunnel Specifications:

  • Working Section: 1.2 x 1.2 x 3m
  • Maximum Velocity: 22m/s or 50 mph.
  • Contraction Ratio 6:1
  • Turbulence intensity: 0.5% (can be increased if required)
  • Reynolds Number / m = 1,200,000
  • Unsteady gust generation: +/-15% at 10m/s at 2Hz

Wind turbine with equipment including a PIV system and a three blade vertical axis wind turbine

Teaching

MEC345 - Aerospace Propulsion

MEC385 - Aerospace Group Design Project (experimental aerodynamic testing)

Books

  • Penz F, Radick G & Howell R (2004) Space. Cambridge Univ Pr.

Journal articles

Conference proceedings papers

  • Howell RJ & Abuan A (2016) Effect of Idealised Unsteady Flow to the Performance of Horizontal Axis Tidal Turbine. Asian Wave and Tidal Energy Conference (AWTEC 2016), 24 October 2016 - 28 October 2016.
  • Danao L, Abuan B & Howell RJ (2016) Design Analysis of a Horizontal Axis Tidal Turbine. Asian Wave and Tidal Energy Conference (AWTEC 2016), 24 October 2016 - 28 October 2016.
  • Fung C, Walker S & Howell RJ (2014) EFFECT OF THE VELOCIT PROFILE OF INCOMING FLOW ON THE PERFORMANCE OF A HORIZONTAL AXIS TIDAL STREAM TURBINE. 2nd Asian Wave and Tidal Energy Conference (AWTEC). Tokyo, Japan, 28 July 2014 - 31 July 2014. View this article in WRRO
  • Eboibi O, Edwards JE, Howell RJ & Danao LAM (2014) Development of Velocity Flow Field Measurement Method Around a Vertical Axis Wind Turbine Blade Using Particle Image Velocimetry. Proceedings of the World Congress on Engineering. London, UK, 2 July 2014 - 4 July 2014.
  • Eboibi O, Edwards J, Howell R & Danao LA (2014) Development of velocity flow field measurement method around a vertical axis wind turbine blade using particle image velocimetry. Lecture Notes in Engineering and Computer Science, Vol. 2 (pp 1184-1189)
  • Danao LAM, Edwards JE, Eboibi O & Howell RJ (2013) The Performance of a Vertical Axis Wind Turbine in Fluctuating Wind – A Numerical Study. IAENG (ISBN: 978-988-19251-0-7). London, 3 July 2013 - 5 July 2013.
  • Eboibi O, Danao LA, Howell RJ & Edwards J (2013) A Numerical Study of the Influence of Blade Profile and Solidity on the Performance of Vertical Axis Wind Turbines. 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. Dallas, TX, USA, 7 January 2013 - 10 January 2013.
  • Danao LA, Edwards J, Eboibi O & Howell R (2013) An experimental investigation into the influence of unsteady wind on the performance of a vertical axis wind turbine. 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
  • Leary J, Howell RJ, While A, Chiroque J & Pinedo C (2012) Post-installation Analysis of Locally Manufactured Small Wind Turbines: Case Studies in Peru. 3rd IEEE International Conference on Sustainable Energy Technologies, ICSET 2012 (pp 396-401). Kathmandu, 24 September 2012 - 27 September 2012.
  • Eboibi O, Danao LM & Howell RJ (2012) Numerical Study of the Influence of Solidity by Altering Blade Chord on the Performance of Vertical Axis Wind Turbines. 4th Wind Power Africa Conference and Renewable Energy Exhibition. Cape Town South Africa, 28 May 2012 - 30 May 2012.
  • Jon Leary , Howell RJ & Aidan While (2012) Locally Manufactured Wind Power Technology for Sustainable Rural Electrification. The Global Dimension in Engineering Education Conference. University College London, March 2012 - March 2012.
  • Danao LA & Howell RJ (2012) Effects on the Performance of Vertical Axis Wind Turbines with Unsteady Wind Inflow: A Numerical Study. 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. Nashville, Tennessee, USA, 9 January 2012 - 12 January 2012.
  • Leary J, While A & Howell RJ (2011) Wind Power for the Poorest 2 Billion. http://www.ewb-uk.org/system/files/Our%20Global%20Future%20-%20Research%20%2526%20Education%20Conference%202011_Proceedings.pdf. Royal Academy of Engineering, London, 4 March 2011.
  • Howell RJ & Wall N (2009) Initial Characterisation of Convoluted Vortex Flow Structures for Hybrid Rocket Applications. CEAS 2009 European Air & Space Conference. Manchester, 26 October 2009 - 29 October 2009.
  • Hamada K, Smith T, Durranic, N, Qin N & Howell RJ (2008) Unsteady Flow Simulation and Dynamic Stall around Vertical Axis Wind Turbine Blades. AIAA-2008-1319. Reno, Navada, USA, 7 January 2008 - 10 January 2008.
  • Edwards J, Durrani N, Howell R & Qin N (2008) Wind Tunnel and Numerical Study of a Small Vertical Axis Wind Turbine. 27th ASME Wind Energy Symposium(AIAA-2008-1316). Reno, Nevada, 7 January 2008 - 10 January 2008.
  • Edwards J, Durrani N, Howell R & Qin N (2008) Wind tunnel and numerical study of a small vertical axis wind turbine. 46th AIAA Aerospace Sciences Meeting and Exhibit
  • Hamada K, Smith T, Durrani N, Qin N & Howell R (2008) Unsteady flow simulation and dynamic stall around vertical axis wind turbine blades. 46th AIAA Aerospace Sciences Meeting and Exhibit
  • Howell RJ & Hodson HP (2000) High Lift Low Pressure Turbines. Minnowbrook III: Boundary Layer Transition and Unsteady Aspects of Turbomachinery Flows. Minnowbrook, Syracuse Univ., 20 August 2000 - 23 August 2000.
  • Howell RJ, Ramesh ON, Hodson HP, Harvey NW & Schulte V (2000) High lift and aft loaded profiles for low pressure turbines. Proceedings of the ASME Turbo Expo, Vol. 3
  • Curtis EM, Hodson HP, Banieghbal MR, Denton JD, Howell RJ & Harvey NW (1996) Development of blade profiles for low pressure turbine applications. ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1996, Vol. 1
  • Leary J, Piggott H, Howell RJ & While A () POWER CURVE MEASUREMENTS OF LOCALLY MANUFACTURED SMALL WIND TURBINES. Proceedings of 8th PhD Seminar on Wind Energy in Europe. ETH Zurich, Switzerland, 12 September 2012 - 14 September 2012.
  • Sobotta D, Howell RJ & Lou J () Investigating the Role of Wind Turbine Pitch using CFD. International Conference on Green Energy and Applications (ICGEA 2016). Singapore!, 23 March 2016 - 25 March 2016.
  • Piggott H, Howell RJ & While A () POWER CURVE MEASUREMENTS OF LOCALLY MANUFACTURED SMALL WIND TURBINES - PART II. 9th PhD Seminar on Wind Energy in Europe. Uppsala University Campus Gotland, Sweden, 18 September 2013 - 20 September 2013.
  • Eboibi O, Danao L & Howell RJ () A Numerical Study of Influence of Blade Profile and Solidity on the Performance of Vertical Axis Wind Turbines. 51st AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. Dallas/Ft. Worth Region, Texas, 7 January 2013 - 10 January 2013.
  • Danao L, Eboibi O & Howell RJ () An Experimental Investigation on the Influence of Unsteady Wind in the Aerodynamic Performance of a Vertical Axis Wind Turbine. 51st AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. Dallas/Ft. Worth Region), Texas, 7 January 2013 - 10 January 2013.
  • Harvey NW, Howell RJ, Hodson HP & Schulte V () The Role of Research in the Aerodynamic Design of an Advanced LP Turbine. 3rd European Conference on Turbomachinery: Fluid Mechanics and Thermodynamics (pp 123-132). London, March 1999.
  • Hodson HP, Schulte V & Howell RJ () The Calmed Region And Its Significance In Low Pressure Turbines. Boundary layer transition in turbomachines. Minnowbrook, Syracuse Univ., 7 September 1997 - 10 September 1997.
  • Howell RJ () Separation Bubble Interactions with Turbulent Spots and Wakes in the Turbomachinery Environment at a Reynolds of around 130,000. Minnowbrook III: Boundary Layer Transition and Unsteady Aspects of Turbomachinery Flows. Minnowbrook, Syracuse Univ., 20 August 2000 - 23 August 2000.
  • Howell RJ & Hodson HP () Unsteady flow: its role in the low pressure turbine. 9th International Symposium on Unsteady Aerodynamics,Aeroacoustics and Aeroelasticity of Turbomachin. Lyon, France., 4 September 2000 - 8 September 2000.

Patents

  • BABINSKY H, DURKAN C, Hodson HP, Howell RJ, KUSCHEL U, Moore D & Welland M (2001) Sensor probe. WO0120344 Appl. 22 Mar 2001.