Aerodynamic Performance Evaluation with a New Method for Darrieus Wind Turbine

Yi Mei; Jian Jun Qu

doi:10.4028/www.scientific.net/AMR.1014.115

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1014Aerodynamic Performance Evaluation with a New...

Aerodynamic Performance Evaluation with a New Method for Darrieus Wind Turbine

Abstract:

The operation condition for darrieus wind turbine is usually complex in urban sites. One of characteristics is unsteady tip speed ratios during the rotor operating, which makes the widely used aerodynamic performance indicator, maximum power coefficient, not so suitable for evaluating vertical axis rotor performance. In this paper, a new method based on the power coefficient values under variable tip speed ratios was developed and the mathematical expression derived by numerical integration measure was presented. Furthermore, a novel wind turbine power performance indicator, average effective wind energy utilization coefficient, has been defined for the rotor performance assessment. A wind tunnel case of darrieus wind turbine with different blade cord length was selected for analyzing. Results demonstrate the proposed method is correct and practical.

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Periodical:

Advanced Materials Research (Volume 1014)

Pages:

115-119

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1014.115

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Online since:

July 2014

Authors:

Yi Mei*, Jian Jun Qu

Keywords:

Aerodynamic Performance, Darrieus Wind Turbine, Power Coefficient, Vertical Axis Wind Turbine, Wind Energy

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* - Corresponding Author

References

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