期刊文献+

串列双方柱气动干扰效应试验研究 被引量:12

Experimental study on aerodynamic interference effect of two square cylinders in a tandem arrangement
原文传递
导出
摘要 为了进一步澄清串列方柱的气动干扰效应,以串列双方柱为研究对象,在雷诺数Re=8.0×10^4、间距比P/B为1.25~5(其中P为方柱中心间距、B为方柱边长)条件下,通过风洞试验同步测得上下游方柱沿周向和展向的表面风压,研究了上下游方柱的风压和气动力特性、两方柱之间气动力的柱间相关性、各方柱气动力沿展向的柱内相关性等随方柱间距的变化情况,分析并给出了干扰条件下非高斯风压沿方柱周向的分布区域。研究结果表明:串列双方柱的临界间距比P/B处在3和3.5之间,在临界间距前后,两个方柱的气动性能均会发生突变;气动力的柱间相关性和柱内相关性随方柱间距变化剧烈,间距比P/B=1.25的串列方柱的气动力柱内相关性远强于单方柱;串列双方柱的风压非高斯区域随间距比的变化较大,下游方柱表面风压的非高斯特性较单方柱更为显著。 To clarify aerodynamic interference between two square cylinders in tandem arrangement,the surface wind pressures of the two cylinders were measured simultaneously by wind tunnel tests at Reynolds number Re=8.0×10^4 and P/B=1.25-5,where P is the center-to-center spacing of the two cylinders and B is the breadth of the square cylinder.Aerodynamic characteristics of the two square cylinders with varying spacing ratio were investigated.The aerodynamic correlations between the two cylinders(inter-cylinder)and different spanwise sections of cylinders(intracylinder)were studied as well.The distribution regions of non-Gaussian wind pressure along the circumferential direction were presented.Results show that the critical spacing ratio of the tandem square cylinders is between 3 and3.5,which produces a discontinuous jump of aerodynamic forces.The aerodynamic correlations change dramatically with the variation of spacing ratio.Specifically,intra-cylinder aerodynamic correlations of the two tandem square cylinders with P/B=1.25 are much greater than those of the single square cylinder.Furthermore,the wind pressure non-Gaussian regions of the two tandem cylinders are presented,which change significantly with the spacing ratio and show different distribution patterns compared with the single square cylinder.
作者 杜晓庆 许汉林 马文勇 代钦 DU Xiaoqing;XU Hanlin;MA Wenyong;DAI Chin(Department of Civil Engineering,Shanghai University,Shanghai 200444,China;Wind Engineering and Aerodynamic Flow Control Research Center,Shanghai University,Shanghai 200444,China;Wind Engineering Research Center,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Institute of Applied Mathematics and Mechanics,Shanghai University,Shanghai 200072,China)
出处 《建筑结构学报》 EI CAS CSCD 北大核心 2019年第11期27-34,共8页 Journal of Building Structures
基金 国家自然科学基金项目(51578330) 上海市自然科学基金项目(14ZR1416000) 河北省自然科学基金项目(E2017210107)
关键词 串列双方柱 干扰效应 风洞试验 气动力相关性 非高斯特性 two tandem square cylinders aerodynamic interference wind tunnel test aerdynamic correlation non-Gaussian feature
  • 相关文献

参考文献5

二级参考文献29

  • 1谢壮宁,顾明,倪振华.3个不同高度高层建筑间的横风向动力干扰效应[J].西安交通大学学报,2004,38(9):967-970. 被引量:7
  • 2谢壮宁,顾明,倪振华.任意排列三个高层建筑间顺风向动力干扰效应的试验研究[J].工程力学,2005,22(5):136-141. 被引量:18
  • 3孙瑛,武岳,林志兴,沈世钊.大跨屋盖结构风压脉动的非高斯特性[J].土木工程学报,2007,40(4):1-5. 被引量:52
  • 4栾军.试验设计与技术与方法[M].上海:上海交通大学出版社,1987..
  • 5KUMAR K S, STATHOPOULOS T. Wind loads on low building roofs: a stochastic perspective[J].Journal of Structural Engineering, 2000, 126(8) : 944 - 956.
  • 6KUMAR K S, STATHOPOULOS T. Synthesis of non-Gaussian wind pressure time series on low building roofs [J].Journal of Structural Engineering, 1999, 21 (12) : 1086 - 1100.
  • 7GIOFRE M, GUSELLA V, GRIGORIU M. Non- Gaussian wind pressure on prismatic buildings. I: stochastic field [J].Journal of Structural Engineering, 2001,127(9) : 981 - 989.
  • 8GIOFRE M, GUSELLA V, GRIGORIU M. Non- Gaussian wind pressure on prismatic buildings. II: numerical simulation[J].Journal of Structural Engineering, 2001, 127(9) : 990 - 995.
  • 9DAVENPORT A G. Gust loading factors [J]. Journal of Structural Division, 1967, 93(ST3) : 11 - 34.
  • 10SADEK F, SIMIU E. Peak non-Gaussian wind effects for database assisted low-rise building design[J]. Journal of Engineering Mechanics ASCE, 2002, 128 ( 5 ) : 530 - 539.

共引文献65

同被引文献73

引证文献12

二级引证文献15

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部