International Review of Applied Sciences and Engineering
Volume/Issue:
Volume 9: Issue 1
Power efficiency of multi-blade drag typed VAWT by CFD simulation
Authors: M. Zheng 1 , L. Zhang 1 , H. P. Teng 1 , J. Hu 1 , and M. L. Hu 2
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  • 1 Northwest University, Xi’an 710069, China
  • 2 Northwest University, Xi’an 710069, China
DOI:
https://doi.org/10.1556/1848.2018.9.1.4
Page Count:
25–29
Publication Date:
01 Jun 2018
Online Publication Date:
Jun 2018
Article Category:
Research Article
Open access

In the present paper, CFD simulation is used to perform the numerical calculation of behaviours of multi-blade drag typed VAWT. The sliding grid technology, FLUENT software and PISO algorithm are involved. By taking wind power efficiency Cp as the goal function, the optimal situations of multi-blade drag typed VAWT with 4 and 6 blades are conducted by CFD simulation. In this investigation, the variable parameters include the rotation rate of wind-mill ω, the blade installation angle θ and the blade width d. The results show that: the optimal working conditions for the 4-blade wind mill at the inlet wind speed 8 m/s are ω = 18 r/ min, θ = 28°, and d = 0.83 m, which induces an optimal wind power efficiency rate Cp = 27.127%; the optimal working conditions for the 6-blade wind mill at the inlet wind speed 8 m/s are ω = 18 r/min, θ = 27°, and d = 0.67 m, which leads to an optimal wind power efficiency rate Cp = 30.404%.

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Cover International Review of Applied Sciences and Engineering
International Review of Applied Sciences and Engineering
Print ISSN:
2062-0810
Keywords:
CFD calculation; multi-blade; drag type VAWT; power efficiency; optimal blade width; installation angle

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