Numerical Implications of Solidity and Blade Number on Rotor Performance of Horizontal-Axis Wind Turbines

Journal of Solar Energy Engineering, Transactions of the ASME - Tập 125 Số 4 - Trang 425-432 - 2003
Matthew Duquette1, Kenneth D. Visser1
1Department of Mechanical and Aeronautical Engineering, Clarkson University, Potsdam, NY 13699

Tóm tắt

A numerical study was conducted to examine the impact of rotor solidity and blade number on the aerodynamic performance of small wind turbines. Blade element momentum theory and lifting line based wake theory were utilized to parametrically assess the effects of blade number and solidity on rotor performance. Increasing the solidity beyond what is traditionally used for electric generating wind turbines led to increased power coefficients at lower tip speed ratios, with an optimum between 3 and 4. An increase in the blade number at a given solidity also increased the maximum Cp for all cases examined. The possibility of a higher aerodynamic power extraction from solidity or blade number increases could lead to a higher overall system power production. Additional advantages over current 5% to 7% solidity, high speed designs would include lower noise, lower cut-in wind speed, and less blade erosion.

Từ khóa


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Thông tin xuất bản

Journal of Solar Energy Engineering, Transactions of the ASME

Tập 125 Số 4

425-432

Thông tin tác giả