李金,袁巍
LI Jin,YUAN Wei(School of Jet Propulsion

• 1:北京航空航天大学航空发动机气动热力国防科技重点实验室

摘要(Abstract)：

基于传统单转子风力机风能利用系数低的缺点,采用改进的Wilson方法设计了一个对转风力机,减小了湍流尾流的影响,提高了风力机总的风能利用系数。研究了两转子半径比对总的风能利用系数的影响。通过三维数值模拟对所设计的风力机进行了设计工况的流动分析。研究结果表明两个转子的最佳半径比为1.5,此时总的风能利用系数能够达到0.52,风能利用系数比单转子的风力机提高了15.6%,风能利用效率得到了一定的改善。
Basing on the disadvantage of low wind energy utilization coefficient for the single rotor wind turbine,a new improved Wilson method has been used to design a counter-rotating wind turbine.It reduces the impact of the turbulent wake to the downstream wind turbine and increases the total wind energy utilization coefficient of the counter-rotating wind turbine.There are many factors affect the total wind energy utilization coefficient,this paper main considers the factor of radius ratio.The performance and detailed flow structure of the designed machine has been obtained by three dimensional numerical simulations.The results show that the optimum radius ratio is 1.5.Numerical calculation results show that the total wind energy utilization coefficient of the counter-rotating wind turbine can get to 0.52 when the radius ratio is 1.5.The wind energy utilization is increased by 15.6% than single-rotor wind turbine.The wind energy utilization coefficient is improved.

关键词(KeyWords)： 对转风力机;总的风能利用系数;半径比;数值模拟
counter-rotating wind turbine;total wind energy utilization coefficient;radius ratio;numerical simulation

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 李金,袁巍
LI Jin,YUAN Wei(School of Jet Propulsion

参考文献(References)：

• [1]Ackermann T,S.o.der L.Wind Energy Technology andCurrent Status:A Review[J].Renewable and Sustain-able Energy Reviews,2000,(4):315-374.
• [2]Shen W Z,Zakkam V A K,Sorensen J N,et al.Analy-sis of counter-rotating wind turbines[J].Journal ofPhysics:Conference Series,Article ID 012003,2007,75(1):9.
• [3]Riadh W Y Habash,Voicu Groza.Performance Optimi-zation of a Dual-Rotor Wind Turbine System[D].School of Information Technology and Engineering,U-niversity of Ottawa,Ottawa,Ontario,Canada.
• [4]王军,周丙超.基于MATLAB的小型风力机叶片设计[J].水电能源科学,2007,25(5):142-144.
• [5]张明辉,万全喜,吴家龙.基于Matlab与Solidworks方法的风力机叶片优化设计[J].流体机械,2012,40(11):48-52,72.
• [6]戴庚,徐璋,皇甫凯林,等.垂直轴风力机研究进展[J].流体机械,2010,38(10):46-50.
• [7]陈星,王凤英,吴玉平.圆柱形爆炸容器冲击载荷及其动力响应的数值模拟[J].压力容器,2012,29(3):21-25.
• [8]聂晶.小型风力机叶片的设计[D].内蒙古:内蒙古工业大学,2005:38-40.
• [9]Jung S N,No T S,Ryu K W.Aerodynamic PerformancePrediction of a 30kW Counter-rotating Wind TurbineSystem[J].Renewable Energy,2005,(30):631-44.
• [10]Clarke J A,Connor G,Grant A D,et al.(2005)De-sign and initial laboratory testing of a Contra-rota-ting tidal current turbine[C].Proc 6th EuropeanWave and Tidal Energy Conf.Glasgow.
• [11]Amano R S,Malloy R J.CFD analysis on aerodynamicdesign optimization of wind turbine rotor blades[J].World Academy of Science,Engineering and Technol-ogy,2009,60:71-75.