An Idea of Introducing Back Swept Blading over Conventional Radial Gas Turbine Enhancing the Performance

  • Chirag Patel
  • Gaurav Singh
Keywords: Turbocharged Engine, Gas Turbine, Radial blade, Back Swept blade, Streamlines, Efficiency.


In the present review paper, there has been made comparison among the different types of blades used in gas turbine and also the evaluation has been made on steam assisted and exhaust gas assisted turbocharged engine. Steam assisted turbocharged engine has more power production as well as high efficiency. By replacing the radial blade with back swept, efficiency can be improved by 3% to 4% as there is great reduction in concentration of whirl formation along the blade.  Streamlines are well arranged and sticking to the back swept blade along the whole length and they are not detaching which is desirable.


R. Keith, Mobley (2001). Plant engineer’s handbook.Butterworth-Heinemann, 14-May-2001 - Technology & Engineering.
C.D. Rakopoulos, A.M. Dimaratos, E.G. Giakoumis, D.C. Rakopoulus (2009). Evaluation of the effect of engine, load and turbocharger parameters on transient emissions of diesel engine.Energy Conversion and Management 50 (2009) 2381–2393.
Nazih N. Bayomi, Rafea M. Abd El-Maksoud (2012). Two operating modes for turbocharger system.Energy Conversion and Management 58 (2012) 59–65.
Vincenzo De Bellis, Silvia Marelli, Fabio Bozza, Massimo Capobianco (2014). 1D simulation and experimental analysis of a turbocharger turbine for automotive engines under steady and unsteady flow conditions.Energy Procedia 45 (2014) 909 – 918.
Jianqin Fu, Jingping Liu, Yong Wang, Banglin Deng, Yanping Yang, Renhua Feng, Jing Yang (2014). A comparative study on various turbocharging approaches based on IC engine exhaust gas energy recovery.Applied Energy 113 (2014) 248–257.
Liam Barr, Stephen W. T. Spence and Paul Eynon (2008). Improved performance of a radial turbine through the implementation of back swept blading.Proceedings of ASME Turbo Expo 2008, GT2008-50064.
Jason Walkingshaw, Stephen Spence, Jan Ehrhard, David Thornhill (2011). An investigation into improving off-design performance in a turbocharger turbine utilizing non-radial blading.Proceedings of ASME Turbo Expo 2011, GT2011-45717.
Liam Barr, Stephen Spence, David Thornhill and Paul Eynon (2009). A numerical and experimental performance comparison of an 86 mm radial and back swept turbine.Proceedings of ASME Turbo Expo 2009, GT2009-59366.
W. J. Doran, S. W. T. Spence and D. W. Artt (2001). Experimental performance evaluation of a 99.0 mm radial inflow nozzled turbine with varying shroud profiles.Proceedings of Institution of Mechanical Engineers, Part A: Journal of Power and Energy 2001 215: 267.
Liam Barr, Stephen Spence and Paul Eynon (2008). Design and Analysis of a Radial Turbine with Back Swept Blading. The 4th International Symposium on Fluid Machinery and Fluid Engineering. November 24-27, 2008, Beijing, China. NO. 4ISFMFE•Ab01.
Jason Walkingshaw, Stephen Spence, Jan Ehrhard, David Thornhill (2014). An Experimental Assessment of the Effects of Stator Vane Tip Clearance Location and Back Swept Blading on an Automotive Variable Geometry Turbocharger.Journal of Turbomachinery, JUNE 2014, Vol. 136 / 061001.
Silvia Marelli, Massimo Capobianco (2011). Steady and pulsating flow efficiency of a waste-gated turbocharger radial flow turbine for automotive application.Energy 36 (2011) 459-465.
A. Dadone and M. Pandolfi (1969). A method for evaluating the off-design performance of a radial inflow turbine and comparison with experiments.Int. J. mech. Sci. Pergamon Press. 1969. Vol. 11, pp. 241-252.
KiyarashRahbar, Saad Mahmoud and Raya K. Al-Dadah (2014). Mean-line modeling and CFD analysis of a miniature radial turbine for distributed power generation systems.International Journal of Low-Carbon Technologies 2014.