Simulation Analysis of Savonius Turbine with Self-Rotating Blades

Abstract:

This paper analyzed the advantages of traditional Savonius (S-type) turbine and the reasons of its low efficiency, proposed a new type of turbine with self-rotating blades and surrounded by a rectifier, and studied the aerodynamic performance by numerical simulations. The turbine is composed of a rectifier and a rotor, the rectifier consists by straight and arc segments which can accelerate the wind speed and adjust the inflow wind angle. The self-rotating blade can reduce the impacted area acting on the leeward blade by wind and arm of the impact torque, therefore reduces the resistant torque of the blade, and the driving torque acting on the windward blade is almost the same with traditional S-type turbine, which can increase the overall driving torque. The result shows that the new turbine has the advantages as below: wide range of wind speed for effective working, high power coefficient (Cp), suitable for low wind speed aera etc. Although the flow field in S-type turbine is complex separating flow, the performance of the turbine proposed in this paper is improved and is better than traditional S-type turbine in numerical simulation which is worth for spreading.

• Periodical: Advanced Materials Research (Volumes 614-615)
• Pages: 480-484
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.614-615.480
• Online since: December 2012
• Authors: Zhi Peng Tang, Ying Xue Yao, Liang Zhou, Jin Ming Wu, Bo Wen Yu
• Keywords: Performance Enhancement, Savonius Turbine with Self-Rotating Blades, Simulation

References

[1] Xue Heng, Zhu Ruizhao,Yang Zhenbin, Yuan Chunhong. Assessment of wind energy reserves in China [J]. Acta Energiae Solaris Sinica, 2001, 22(2):168-170. (In Chinese)

[2] B.D. Altan,Mehmet Atilgan,Aydogan Ozdamar. An experimental study on improvement of a Savonius rotor performance with curtaining[J]. Experimental Thermal and Fluid Science, 2008(32): 1673-1678.

DOI: 10.1016/j.expthermflusci.2008.06.006

[3] Kunio Irabu, Jitendro Nath Roy, Characteristics of wind power on Savonius rotor using a guide-box tunnel. Experimental Thermal and Fluid Science. 2007, 32(2): 580-586

DOI: 10.1016/j.expthermflusci.2007.06.008

[4] Z.P. Tang, Y.X. Yao, L. Zhou, Q. Yao. Optimal Design of A New Type of Savonius Rotor Using Simulation Analysis. Key Engineering Materials. Vol.499(2012).pp:120-125

DOI: 10.4028/www.scientific.net/kem.499.120

[5] Chaoqi Jang, Qiang Yan. The comparative research of the VAWT and HAWT . Shanghai Electric Power . 2007，2:163~165 (In Chinese)