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CLC number: TK83

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Received: 2007-01-17

Revision Accepted: 2007-06-23

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Cited: 10

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Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE A 2007 Vol.8 No.9 P.1414~1421

10.1631/jzus.2007.A1414


Numerical investigation on the flow and power of small-sized multi-bladed straight Darrieus wind turbine


Author(s):  JIANG Zhi-chao, DOI Yasuaki, ZHANG Shu-you

Affiliation(s):  College of Mechanical and Energy Engineering, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   jzcaths@gmail.com, zsy@zju.edu.cn

Key Words:  Small-sized, Straight Darrieus wind turbine, Multi-bladed, Power coefficient


JIANG Zhi-chao, DOI Yasuaki, ZHANG Shu-you. Numerical investigation on the flow and power of small-sized multi-bladed straight Darrieus wind turbine[J]. Journal of Zhejiang University Science A, 2007, 8(9): 1414~1421.

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author="JIANG Zhi-chao, DOI Yasuaki, ZHANG Shu-you",
journal="Journal of Zhejiang University Science A",
volume="8",
number="9",
pages="1414~1421",
year="2007",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2007.A1414"
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%T Numerical investigation on the flow and power of small-sized multi-bladed straight Darrieus wind turbine
%A JIANG Zhi-chao
%A DOI Yasuaki
%A ZHANG Shu-you
%J Journal of Zhejiang University SCIENCE A
%V 8
%N 9
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%@ 1673-565X
%D 2007
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2007.A1414

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T1 - Numerical investigation on the flow and power of small-sized multi-bladed straight Darrieus wind turbine
A1 - JIANG Zhi-chao
A1 - DOI Yasuaki
A1 - ZHANG Shu-you
J0 - Journal of Zhejiang University Science A
VL - 8
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SP - 1414
EP - 1421
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Y1 - 2007
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2007.A1414


Abstract: 
straight Darrieus wind turbine has attractive characteristics such as the ability to accept wind from random direction and easy installation and maintenance. But its aerodynamic performance is very complicated, especially for the existence of dynamic stall. How to get better aerodynamic performance arouses lots of interests in the design procedure of a straight Darrieus wind turbine. In this paper, mainly the effects of number of blades and tip speed ratio are discussed. Based on the numerical investigation, an assumed asymmetric straight Darrieus wind turbine is proposed to improve the averaged power coefficient. As to the numerical method, the flow around the turbine is simulated by solving the 2D unsteady Navier-Stokes equation combined with continuous equation. The time marching method on a body-fitted coordinate system based on MAC (Marker-and-Cell) method is used. O-type grid is generated for the whole calculation domain. The characteristics of tangential and normal force are discussed related with dynamic stall of the blade. Averaged power coefficient per period of rotating is calculated to evaluate the eligibility of the turbine.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1] Camelli, F.E., Löhner, R., 2002. Combining the Baldwin Lomax and Smagorinsky Turbulence Models to Calculate Flows with Separation Regions. 40th AIAA Aerospace Sciences Meeting & Exhibit.

[2] Eriksson, S., Bernhoff, H., Leijon, M., 2007. Evaluation of different turbine concepts for wind power. Renewable and Sustainable Energy Reviews (in Press).

[3] Horiuchi, K., Seki, K., 2003. Flow analysis of straight wing vertical axis type wind turbine for power generation. IEE J. Transactions on Power and Energy, 123(12):1488-1494.

[4] Ishimatsu, K., Kage, K., Okubayashi, T., 1995. Numerical Simulation for flow fields of Darrieus turbine. Transactions of Japan Society of Mechanical Engineering, 61:187-192.

[5] Islam, M., Ting, D.S.K., Fartaj, A., 2007. Aerodynamic models for Darrieus-type straight-bladed vertical axis wind turbines. Renewable and Sustainable Energy Reviews (in Press).

[6] Jiang, Z.C., 2005. Numerical Investigation on the Flow and Power Generation of Straight Darrieus Wind Turbine in Low Reynolds Number Turbulent Flow. Ph.D Thesis, Hiroshima University, Japan.

[7] Jiang, Z.C., Doi, Y., 2005. Numerical investigation on principal design parameters of straight Darrieus wind turbine. Transactions of the West-Japan Society of Naval Architects, 109:151-160.

[8] Jiang, Z.C., Doi, Y., Iwashita, H., 2004. Numerical study of the flow around a straight Darrieus turbine. Transactions of the West-Japan Society of Naval Architects, 108:85-93.

[9] Oler, J.W., Strickland, J.H., Im, B.J., Graham, G.H., 1983. Dynamics Stall Regulation of the Darrieus Turbine. SANDIA Technical Report SAND83-7029.

[10] Paraschivoiu, I., 2002. Wind Turbine Design with Emphasis on Darrieus Concept. Polytechnic International Press, Montreal, Canada, p.359-381.

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