Effect of tip speed ratio of rear stage impeller on the performance of contra-rotating wind turbine

DOI

10.2991/icaees-15.2015.184How to use a DOI?

Keywords

wind power; contra-rotating wind turbine; tip speed ratio; numerical simulation.

Abstract

Based on the experimental research and numerical calculation of the Contra-Rotating Wind Turbine (CRWT) by using the technique of the aero-engine and propeller, the effect of the tip speed ratio of the rear stage on the performance of the contra-rotating wind turbine is studied by using numerical simulation method in this paper. The computational results show that there is an optimal tip speed ratio on the rear stage of the contra-rotating wind turbine under medium wind speed in order to achieve the highest output power. Below the optimal value, boundary layer separation of the rotor blade is serious, output power is lower, and output torque is larger; above the optimal value, the opposite situation occurs. Through analyzing the computational results, the optimal value of tip speed ratio of rear stage impeller is 1.667.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhiqiang Li
AU  - Zhiming Li
PY  - 2015/07
DA  - 2015/07
TI  - Effect of tip speed ratio of rear stage impeller on the performance of contra-rotating wind turbine
BT  - Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015
PB  - Atlantis Press
SP  - 1003
EP  - 1007
SN  - 2352-5401
UR  - https://doi.org/10.2991/icaees-15.2015.184
DO  - 10.2991/icaees-15.2015.184
ID  - Li2015/07
ER  -