Muhammad Aqeel,高延伟,李永强,刘青,张照煌.流动空气与风力发电叶片作用特性研究[J].中国水利水电科学研究院学报,2017,15(6):425-429
流动空气与风力发电叶片作用特性研究
Study on characteristics of the interaction between flowing air and wind turbine blade
投稿时间:2016-05-26  
DOI:10.13244/j.cnki.jiwhr.2017.06.003
中文关键词:  风力发电叶片  伯努利方程  动量矩原理
英文关键词:wind turbine blade  bernoulli equation  momentum moment principle
基金项目:
作者单位
Muhammad Aqeel 华北电力大学能源动力与机械工程学院, 北京 102206 
高延伟 中国建筑出版社, 北京 100037 
李永强 山西省忻州市滹沱河水利管理局, 山西 忻州 034000 
刘青 华北电力大学能源动力与机械工程学院, 北京 102206 
张照煌 华北电力大学能源动力与机械工程学院, 北京 102206 
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中文摘要:
      流动空气与风力发电叶片作用特性是风力发电叶片设计的基础,是风力发电领域研究的难题。长期以来以动量-叶素理论为基础,以流过风力发电叶片空气流场为对象,相继建立了叶片优化设计的Schmitz方法、Glauert方法、Wilson方法和CFD方法等。但流经叶片过程中的空气对叶片作用的特性仍有许多问题需要亟待解决和深入研究。为此,论文应用伯努利方程推导了环状流动空气流过风力发电风轮时传递给风轮的能量计算解析式;应用动量矩原理推导了环状流动空气流过风力发电风轮时作用在风轮上的力矩解析式;提出了流过风轮的环状空气向风轮释放功率的解析式,从而发现风轮正常工作时,流过风轮的环状空气向风轮释放的功率等于环状空气流量、空气密度、环缘处风轮的牵连运动速度及环缘处流出空气的绝对运动速度在此点牵连运动速度方向上投影的连乘积。为叶片截面轮廓曲线后边缘特征参数设置提供了参考。
英文摘要:
      The characteristic of interaction between flowing air and wind turbine blade is the foundation in the wind turbine blade design and has been a difficult problem in the wind power generation. For a long time, taking the air flow field of wind turbine blades as the objective and on the basis of momentum-blade element theory, the Schmitz method, Glauert method, Wilson method and CFD method have been established to optimize the balde design. However, still a lot of problems need further improvement and study in view of the characteristics of the effect of air on blades during the air flowing through blades. Therefore, the analytical formula of energy transferred from annular flowing air to rotor was proposed based on Bernoulli equation, the analytical formula of torque on the rotor under the annular flow situation was put forward with the principle of momentum, and the analytical formula of transmission power from annular flowing air to rotor was presented. It is obtained that the transmission power is equal to the continuous product of annular air flow, air density, convected velocity of rotor at rim and the projection of the absolute velocity of the air outflowing around the rim. It provides guide for setting trailing edge feature parameters of blade profile curve.
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