考虑风向角的地面光伏阵列风压折减特性研究
姜涛,牛斌
摘要(Abstract):
针对地面光伏电站流场不均匀且各阵列所受风压复杂的特性,采用CFD方法分析不同风向下多排阵列风载荷的变化情况,并讨论最不利条件下阵列间距对折减特性的影响。结果表明:当来流风向为北风和南风时,风载荷折减效应最明显,随着风向角向横向靠近,折减效应趋于平缓,最大载荷也逐渐减小;在地面光伏电站中,受风载荷影响最大的为外围光伏结构,在阵列排布及结构设计时应基于流体力学计算结果考虑风压折减,划分风载荷区域。
关键词(KeyWords): 光伏阵列;风向角;风载荷;净力系数;折减特性
基金项目(Foundation):
作者(Author): 姜涛,牛斌
参考文献(References):
- [1]Pratt R N,Kopp G A.Velocity measurements around lowprofile,tilted,solar arrays mounted on large flat-roofs,for wall normal wind directions[J].Journal of Wind Engineering and Industrial Aerodynamics,2013,123,Part A:226-238.
- [2]Kopp G A,FarquharS,Morrison M J.Aerodynamic mechanisms for wind loads on tilted,roof-mounted,solar arrays[J].Journal of Wind Engineering and Industrial Aerodynamics,2012,111:40-52.
- [3]Abiola-Ogedengbe A.Experimental investigation of wind effect on solar panels[D].Canada:University of Western Ontario,2013.
- [4]Banks D.How wind load studies will impact the solar industry[EB/OL].https://ases.conference-services.net/resources/252/2859/pdf/SOLAR2012_0419_full%20paper.pdf.
- [5]Chung K,Chang K,Liu Y.Reduction of wind uplift of a solar collector model[J].Journal of Wind Engineering and Industrial Aerodynamics,2008,96(8–9):1294-1306.
- [6]Bitsuamlak G,Dagnew A,Erwin J.Evaluation of wind loads on solar panel modules using CFD[A].5th International Symposium on Computational Wind Engineer ing(CWE2010)[C],Chapel Hill,North Carolina,USA,2010.
- [7]Yu Y.Numerical simulation of wind load on roof mounted solar panels[D].Canada:University of Western Onta rio,2012
- [8]Warsido W P,Bitsuamlak G T,Barata J,et al.Influence of spacing parameters on the wind loading of solar array[J].Journal of Fluids and Structures,2014,48:295-315.
- [9]V?sie?G,Axinte E,Teleman E C.Numerical simulation of wind action on solar panel placed on flat roofs with and without parapet[J].Bulletin of the Politehnic Institute of Iasi-Construction and Architecture,2012,58(1):139-155.
- [10]Biswas G,Eswaran V.Turbulent flows:Fundamentals,experiments and modeling[M].America:CRC Press,2002.
- [11]Menter F R.Tw o-equation eddy-viscosity turbulence models for engineering applications[J].AIAA Journal,1994,32(8):1598-1605.