Savonius风机叶轮双侧外形优化设计
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摘要
为了提高Savonius风机叶轮的风能利用率,本文提出一种双侧外形不同的叶轮方案,并对双侧外形参数进行优化。利用基于雷诺时均的N-S方程和SST k-ω湍流模型以及滑移网格技术建立叶轮数值仿真计算的CFD模型;同时建立风机叶轮双侧外形参数的Kriging-PSO优化模型;基于CFD和Kriging-PSO优化模型对Savonius风机叶轮双侧外形进行优化。研究结果表明:形状参数为(0. 626 8,0. 541 3)的叶轮发电效率最高(0. 284),相比于常规的Savonius叶轮的发电效率(0. 265)提高7. 17%。
To improve the utilization rate of wind energy on Savonius wind turbines,this study proposes an impeller scheme with different bilateral contour and optimizes bilateral shape parameters. Based on the Reynolds averaged N-S equations and SST k-ω turbulence model,the computational fluid dynamics( CFD) model of numerical calculation is established using the sliding mesh technique. Then,the kriging-PSO optimization model of the wind turbine impeller with bilateral contour is developed. Finally,the CFD and kriging-PSO optimization models are used to optimize the bilateral shape of the Savonius wind turbine impeller. Results show that the impeller with shape parameter of( 0. 626 8,0. 541 3) has the highest efficiency( 0. 284),which is 7. 17% more than that of the conventional Savonius impeller( 0. 265).
To improve the utilization rate of wind energy on Savonius wind turbines,this study proposes an impeller scheme with different bilateral contour and optimizes bilateral shape parameters. Based on the Reynolds averaged N-S equations and SST k-ω turbulence model,the computational fluid dynamics( CFD) model of numerical calculation is established using the sliding mesh technique. Then,the kriging-PSO optimization model of the wind turbine impeller with bilateral contour is developed. Finally,the CFD and kriging-PSO optimization models are used to optimize the bilateral shape of the Savonius wind turbine impeller. Results show that the impeller with shape parameter of( 0. 626 8,0. 541 3) has the highest efficiency( 0. 284),which is 7. 17% more than that of the conventional Savonius impeller( 0. 265).
引文
[1]王睿哲. Savonius风力机叶片主要参数优化设计研究[D].呼和浩特:内蒙古工业大学,2015.WANG Ruizhe. Study on optimal design of main parameters for blades of Savonius wind turbine[D]. Hohhot:Inner Mongolia University of Technology,2015.
[2]李志强. Savonius风机气动增效的曲-直集风流动控制[D].哈尔滨:哈尔滨工业大学,2016.LI Zhiqiang. Flow control of aerodynamic performance improvement of Savonius wind rotor via a arc-straight shaped curtain[D]. Harbin:Harbin Institute of Technology,2016.
[3]ALEXANDER A J,HOLOWNIA B P. Wind tunnel tests on a Savonius rotor[J]. Journal of wind engineering and industrial aerodynamics,1978,3(4):343-351.
[4]MAHMOUD N H,EL-HAROUN A A,WAHBA E,et al.An experimental study on improvement of Savonius rotor performance[J]. Alexandria engineering journal,2012,51(1):19-25.
[5]BISWAS A,GUPTA R,SHARMA K K. Experimental investigation of overlap and blockage effects on three-bucket Savonius rotors[J]. Wind engineering,2007,31(5):363-368.
[6]DOBREV I,MASSOUH F. CFD and PIV investigation of unsteady flow through Savonius wind turbine[J]. Energy procedia,2011,6:711-720.
[7]RAJKUMAR M J,SAHA U K,MAITY D. Simulation of flow around and behind a Savonius rotor[J]. International energy journal,2005,6(2):83-90.
[8]IRABU K,ROY J N. Characteristics of wind power on Savonius rotor using a guide-box tunnel[J]. Experimental thermal and fluid science,2007,32(2):580-586.
[9]TIAN Wenlong,MAO Zhaoyong,ZHANG Baoshou,et al.Shape optimization of a Savonius wind rotor with different convex and concave sides[J]. Renewable energy,2018,117:287-299.
[10]毛昭勇,卫超,黄伟超,等.导流板对Banki式风机性能的影响分析[J].兵工学报,2014,35(8):1324-1328.MAO Zhaoyong,WEI Chao,HUANG Weichao,et al. Influence of deflector baffle on performance of Banki wind turbine[J]. Acta armamentarii,2014,35(8):1324-1328.
[11]李鹿野,张维竞.某小型风机提高风能利用率的研究[J].节能技术,2015,33(4):295-298,315.LI Luye,ZHANG Weijing. Improvement of a small wind turbine with curtaining[J]. Energy conservation technology,2015,33(4):295-298,315.
[12]ALDOS T K. Savonius rotor using swinging blades as an augmentation system[J]. Wind engineering, 1984,8(4):214-220.
[13]TABASSUM S A,PROBERT S D. Vertical-axis wind turbine:a modified design[J]. Applied energy,1987,28(1):59-67.
[14]KAMOJI M A,KEDARE S B,PRABHU S V. Experimental investigations on single stage,two stage and three stage conventional Savonius rotor[J]. International journal of energy research,2008,32(10):877-895.
[15]BLACKWELL B F,SHELDAHL R E,FELTZ L V. Wind tunnel performance data for two-and three-bucket Savonius rotors,SAND76-0131[R]. New Mexico:US Sandia Laboratories,1977.
[16]谢延敏,徐笑梅,罗征志.基于Kriging模型的翻边成形参数优化[J].塑性工程学报,2010,17(5):4-9.XIE Yanmin,XU Xiaomei,LUO Zhengzhi. Research on parameter optimization in flanging process based on Kriging metamodel[J]. Journal of plasticity engineering,2010,17(5):4-9.
[17]冯吉路,孙志礼,李皓川,等.基于Kriging模型的轴承结构参数优化设计方法[J].航空动力学报,2017,32(3):723-729.FENG Jilu,SUN Zhili,LI Haochuan,et al. Optimization design method of bearing structure parameters based on Kriging model[J]. Journal of aerospace power,2017,32(3):723-729.
[2]李志强. Savonius风机气动增效的曲-直集风流动控制[D].哈尔滨:哈尔滨工业大学,2016.LI Zhiqiang. Flow control of aerodynamic performance improvement of Savonius wind rotor via a arc-straight shaped curtain[D]. Harbin:Harbin Institute of Technology,2016.
[3]ALEXANDER A J,HOLOWNIA B P. Wind tunnel tests on a Savonius rotor[J]. Journal of wind engineering and industrial aerodynamics,1978,3(4):343-351.
[4]MAHMOUD N H,EL-HAROUN A A,WAHBA E,et al.An experimental study on improvement of Savonius rotor performance[J]. Alexandria engineering journal,2012,51(1):19-25.
[5]BISWAS A,GUPTA R,SHARMA K K. Experimental investigation of overlap and blockage effects on three-bucket Savonius rotors[J]. Wind engineering,2007,31(5):363-368.
[6]DOBREV I,MASSOUH F. CFD and PIV investigation of unsteady flow through Savonius wind turbine[J]. Energy procedia,2011,6:711-720.
[7]RAJKUMAR M J,SAHA U K,MAITY D. Simulation of flow around and behind a Savonius rotor[J]. International energy journal,2005,6(2):83-90.
[8]IRABU K,ROY J N. Characteristics of wind power on Savonius rotor using a guide-box tunnel[J]. Experimental thermal and fluid science,2007,32(2):580-586.
[9]TIAN Wenlong,MAO Zhaoyong,ZHANG Baoshou,et al.Shape optimization of a Savonius wind rotor with different convex and concave sides[J]. Renewable energy,2018,117:287-299.
[10]毛昭勇,卫超,黄伟超,等.导流板对Banki式风机性能的影响分析[J].兵工学报,2014,35(8):1324-1328.MAO Zhaoyong,WEI Chao,HUANG Weichao,et al. Influence of deflector baffle on performance of Banki wind turbine[J]. Acta armamentarii,2014,35(8):1324-1328.
[11]李鹿野,张维竞.某小型风机提高风能利用率的研究[J].节能技术,2015,33(4):295-298,315.LI Luye,ZHANG Weijing. Improvement of a small wind turbine with curtaining[J]. Energy conservation technology,2015,33(4):295-298,315.
[12]ALDOS T K. Savonius rotor using swinging blades as an augmentation system[J]. Wind engineering, 1984,8(4):214-220.
[13]TABASSUM S A,PROBERT S D. Vertical-axis wind turbine:a modified design[J]. Applied energy,1987,28(1):59-67.
[14]KAMOJI M A,KEDARE S B,PRABHU S V. Experimental investigations on single stage,two stage and three stage conventional Savonius rotor[J]. International journal of energy research,2008,32(10):877-895.
[15]BLACKWELL B F,SHELDAHL R E,FELTZ L V. Wind tunnel performance data for two-and three-bucket Savonius rotors,SAND76-0131[R]. New Mexico:US Sandia Laboratories,1977.
[16]谢延敏,徐笑梅,罗征志.基于Kriging模型的翻边成形参数优化[J].塑性工程学报,2010,17(5):4-9.XIE Yanmin,XU Xiaomei,LUO Zhengzhi. Research on parameter optimization in flanging process based on Kriging metamodel[J]. Journal of plasticity engineering,2010,17(5):4-9.
[17]冯吉路,孙志礼,李皓川,等.基于Kriging模型的轴承结构参数优化设计方法[J].航空动力学报,2017,32(3):723-729.FENG Jilu,SUN Zhili,LI Haochuan,et al. Optimization design method of bearing structure parameters based on Kriging model[J]. Journal of aerospace power,2017,32(3):723-729.
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