Journal of Thermal Science

, Volume 20, Issue 3, pp 224–228 | Cite as

Influence of setting condition on characteristics of Savonius hydraulic turbine with a shield plate

  • Shouichiro Iio
  • Yusuke Katayama
  • Fuminori Uchiyama
  • Eiichi Sato
  • Toshihiko Ikeda


The aim of this investigation was to improve power performance of Savonius hydraulic turbine utilizing small stream for electric generation. An attempt was made to increase the power coefficient of runner by the use of flat shield plate placed upstream of the runner. The difference of the power coefficient is discussed in relation to clearance between the runner and the bottom wall and the rotation direction of the runner. The flow field around the runner was also examined visually to clarify influences of setting conditions on the power performance. From this study it was found that the power coefficient is achieved for 0.47 by only using a flat shield plate, the increase is up to 80% over the runner without the plate. Moreover, it is the proper condition that clearance ratio is 0.73 in this study.


Nano-hydraulic turbine Savonius runner Shield plate Performance 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    Sheldahl, R. E., Feltz, L.V. and Blackwell, B. F.: Wind Tunnel Performance Data for Two and Three-Bucket Savonius Rotors, Journal of Energy, Vol.2, No.3, pp.160–164, (1978).ADSCrossRefGoogle Scholar
  2. [2]
    Sivasegaram, S.: Secondary Parameters Affecting the Performance of Resistance-type Vertical-axis Wind Rotors, Wind Engineering, Vol.2, No.1, pp.49–59, (1978).ADSGoogle Scholar
  3. [3]
    Ushiyama, I., Nagai, H. and Shinoda, J.: Experimentally Determining the Optimum Design Configuration for Savonius Rotors, Transactions of the Japan Society of Mechanical Engineers, Series B, Vol.52, No.480, pp.2973–2981 (1986), in Japanese.CrossRefGoogle Scholar
  4. [4]
    Bergeles, G. and Athanassiadis, N.: On the Field around a Savonius Rotors, Wind Engineering, Vol.6 No.3, pp.140–148, (1982).ADSGoogle Scholar
  5. [5]
    Murai, H., Kataoka, M., Narasaka, T., Watanabe, H. and Onuma, S.: Influence of Flaps and Deflectors on Power and Torque Characteristics of Savonius Rotor, Journal of the Visualization Society of Japan, 4-Suppl, pp.11–16, (1984), in Japanese.Google Scholar
  6. [6]
    Fujisawa, N., Shirai, H. and Saikawa, Y.: Investigation of the Field and Power Mechanism of a Savonius Rotor: Flow Visualization by a Smoke-wire Method, Transactions of the Japan Society of Mechanical Engineers, Series B, Vol.53, No.496, pp.3716–3721, (1987), in Japanese.CrossRefGoogle Scholar
  7. [7]
    Ogawa, T.: Research of a Savonius Rotor: Part 1 Theoretical Analysis, Transactions of the Japan Society of Mechanical Engineers, Series B, Vol.49, No.441, pp.976–984, (1983), in Japanese.CrossRefGoogle Scholar
  8. [8]
    Ishimatsu, K., Shinohara, T. and Takuma, F.: Numerical Simulation for Savonius Rotor: Running Performance and Flow Field, Transactions of the Japan Society of Mechanical Engineering, Series B, Vol.60, No.569, pp.154–160, (1994), in Japanese.CrossRefGoogle Scholar
  9. [9]
    Sivasegaram, S.: Concentration Augmentation of Power in a Savonius-type Wind Rotor, Wind Engineering, Vol.3, No.1, pp.52–61, (1979).ADSGoogle Scholar
  10. [10]
    Sabzavari, A.: Performance Characteristics of Concentrator-Augmented Savonius Wind Rotors, Wind Engineering, Vol.1, No.3, pp.198–206, (1977).ADSGoogle Scholar
  11. [11]
    Ueno, H., Mino, M. and Takada, N.: Savonius type wind turbine (The influence of wind concentrator), Journal of Japan Solar Energy Society, Vol.30, No.5, pp.35–40, (2004), in Japanese.Google Scholar
  12. [12]
    Ogawa, T., Tahara, K. and Suzuki, N.: Study on a Savonius-Type Wind Turbine: 2nd Report, Effects of Guide Vanes, Transactions of the Japan Society of Mechanical Engineers, Series B, Vol.51, No.471, pp.3516–3522, (1985), in Japanese.CrossRefGoogle Scholar
  13. [13]
    Sato, S., Kikuchi, K. and Ushiyama, I.: An Experimental Study on Power Augmentation of Savonius Rotor, Proceedings of JSES/JWEA Joint Conference, Memoirs of the Ashikaga Insutitute of Technology, pp.197–200, (1997).Google Scholar
  14. [14]
    Lei, W., Kitani, O., Okamoto, T. and Torii, T.: Experimental Study on the Efficiency Increase of a Savonius Windmill (Part 1): Test of Concentrator’s Performance, Journal of the Japanese Society of Agricultural Machinery, Vol.58, No.2, pp.11–17, (1996), in Japanese.Google Scholar
  15. [15]
    Savonius, S. J., The S-Rotor and Its Applications, Mechanical Engineering, Vol.53, No.5, pp.333–338, (1931).Google Scholar
  16. [16]
    Takaku, A. and Ogawa, Y.: Practical Application of Multi-Step Vertical-axis Wind Rotor (2nd Report, Characteristics of the Third Wind Rotor), Turbomachinery, Vol.13, No.12, pp.711–721, (1985), in Japanese.Google Scholar
  17. [17]
    Khan, M. H.: Model and Prototype Performance Characteristics of Savonius Rotor Windmill, Wind Engineering, Vol.2, No.2, pp.75–85, (1978).ADSGoogle Scholar
  18. [18]
    Hayashi, T., Li, Yan. and Hara, Y.: Wind Tunnel Tests on a Different Phase Three-Stage Savonius Rotor (〈Special Issue〉 Experimental Mechanics in Heat and Fluid Flow), JSME International Journal, Series B, Fluids and thermal engineering, Vol.48, No.1, pp.9–16, (2005).ADSCrossRefGoogle Scholar
  19. [19]
    Menet, J. L.: A double-step Savonius rotor for local production of electricity: a design study, Renewable energy, Vol.29, pp.1843–1862, (2004).CrossRefGoogle Scholar
  20. [20]
    Suzuki, S., Kato, E. and Tachikawa, T.: Flow in the vicinity of vane of Twist Savonius Rotor, Ibaraki district conference, Hitachi, Japan, pp.137–138, (2005), in Japanese.Google Scholar
  21. [21]
    Higo, T., Takasugi, Y., Fujiwara, T. and Noguchi, H.: Efficiency of Savonius Hydro Turbine for Tidal Current, Reports of the Government Industrial Research Institute Chugoku, No.32, pp.1–13, (1989), in Japanese.Google Scholar
  22. [22]
    Tan, S., Shimizu, Y. and Kikuyama, K.: Experimental Studies on a Savonius Rotor with Casing, Transactions of the Japan Society of Mechanical Engineers, Series B, Vol.63, No.611, pp.2356–2363, (1997), in Japanese.Google Scholar
  23. [23]
    Okuda, K., Watabe, T., Kondoh, H. and Yano, K.: Study of the Wave Energy Conversion System Fixed on the Seashore: Part 1 A Water Turbine of Savonius Type for Wave Power, Memoirs of the Muroran Institute of Technology, Muroran, Japan, pp.427–432, (1981), in Japanese.Google Scholar
  24. [24]
    Nakajima, M., Iio, S. and Ikeda, T.: Performance of Double-step Savonius Rotor for Environmentally Friendly Hydraulic Turbine, Journal of Fluid Science and Technology, Vol.3, No.3, pp.410–419(2008).ADSCrossRefGoogle Scholar
  25. [25]
    Nakajima, M., Iio, S. and Ikeda, T.: Performance of Savonius Rotor for Environmentally Friendly Hydraulic Turbine, Journal of Fluid Science and Technology, Vol.3, No.3, pp.420–429, (2008).ADSCrossRefGoogle Scholar
  26. [26]
    Iio, S., Uchiyama, F., Sonoda, C. and Ikeda, T.: Performance Improvement of Savonius Hydraulic Turbine by using a Shield Plate, Turbomachinery, Vol.37, No.12, pp.743–748, (2009), in Japanese.Google Scholar

Copyright information

© Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Shouichiro Iio
    • 1
  • Yusuke Katayama
    • 2
  • Fuminori Uchiyama
    • 3
  • Eiichi Sato
    • 4
  • Toshihiko Ikeda
    • 1
  1. 1.Faculity of Eng.Shinshu UniversityNaganoJapan
  2. 2.Student of Shinshu UniversityNaganoJapan
  3. 3.Flowserve Niigata Worthington Co., Ltd.NiigataJapan
  4. 4.Faculty of Eng.Niigata Institute of TechnologyNiigataJapan

Personalised recommendations