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水平轴变桨距风机叶轮的空气动力学分析
第31 卷第8期 东 北 大 学 学 报 ( 自 然 科 学 版 ) Vol31, No. 8
2 0 10 年 8 月 Journal of Northeastern U ni ersity( Natural Science) Aug. 2 0 1 0
王晓冬, 颜 芳
( , 110004)
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CFD , , ,
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: TP 391 : A : 1005-3026( 2010) 08-1178-04
Aerodynamic Analysis of Horizonta-l Axis Pitch-Variable Wind
Turbine
WA N G X iao-dong , YA N Fang
( School of Mechanical Engineering Automation, Northeastern Uni ersity, Shenyang 110004, China.
Correspondent: WA NG Xiao-dong, associate professor , E-mail: x dwang @ mail. neu. edu. cn)
Abstract: A mathematic model based on free trailing ortex theory and lifting-surface theory was
de eloped to describe the ambient airflow by blades and characteristics of w ind turbine so as to
in estigate the aerodynamic beha ior of a w ind turbine blade. A numerical solution to the model
w as carried out to obtain the relationship betw een tip elocity ratio and pow er coefficient as w ell
as that betw een w ind elocity and pow er coefficient by introducing the induced elocity between
the blades and ortices. Compared w ith experimental data, it w as found that the theoretical
results conform basically w ith the experimental results. Further, compared w ith the CFD
(computational fluid dynamics) method, the free trailing ortex method w ould get acceptable
computational accuracy at low er cost . T he results are therefore regarded as a ailable to select the
w ind turbine position in a w ind field and optimize the design of w ind turbine control system.
Key words: wind turbine; pitch- ariable; flow field analysis; free ortices; numerical solution
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