桨叶结构尺寸与布机方式对风力机功率的影响分析
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南京工业大学 机械与动力工程学院

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中图分类号:

O355

基金项目:

国家自然科学基金项目(面上项目,重点项目,重大项目)


Analysis of the effect of blade radius and deployment method on wind turbine power
Author:
Affiliation:

School of Mechanical and Power Engineering,Nanjing Tech University

Fund Project:

The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    上游风力机尾流效应使得下游风力机来流风速降低,输出功率减小。为提高风力机组总功率,首先基于CATIA软件和Fluent软件构建NREL风力机气动分析模型,计算恒定风速下风力机叶片表面压力系数及风轮输出功率,与美国风洞实验进行对比,验证NREL风力机气动分析模型的准确性。随后,计算分析串列间距、桨叶结构半径对风力机推力、扭矩及功率的影响,研究结果表明间距增大,前风轮尾流效应减弱而后风轮功率逐渐恢复;而增大后桨叶半径可增加风轮扫掠面积,进而提高风能利用系数。后风轮尺寸为1.5倍桨叶半径,风力机组功率较前后风轮相同情况下提升33.09%。最后,调整风力机组布机方式,可减小尾流干扰,风力机组总功率较串列排布提升9.87%。

    Abstract:

    The wake effect of the upstream wind turbine reduces the incoming wind speed and the output power of the downstream wind turbine. In order to increase the total power of the wind turbines, the NREL wind turbine aerodynamic analysis model was first constructed based on CATIA software and Fluent software to calculate the surface pressure coefficient of the wind turbine blades and the output power of the wind turbine at a constant wind speed compared with the American wind tunnel experiment to verify the accuracy of the aerodynamic analysis model of the NREL wind turbine. Subsequently, the effects of the tandem spacing and the size of the rotor on the thrust, torque and power of the wind turbine were calculated and analyzed. The study showed that the wake effect of the front rotor is weakened and the power of the rear rotor is gradually recovered with the increasing in spacing.

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史瑞鹏,谭剑锋,蔡建纲,等. 桨叶结构尺寸与布机方式对风力机功率的影响分析[J]. 科学技术与工程, , ():

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  • 收稿日期:2021-01-07
  • 最后修改日期:2021-05-11
  • 录用日期:2021-05-11
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