| 同轴双方柱气动力载荷的相互干扰 |
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| 引用本文： | 马健,郭明旻,徐有恒.同轴双方柱气动力载荷的相互干扰[J].上海力学,2000,21(3):365-370. |
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| 作者姓名： | 马健 郭明旻 徐有恒 |
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| 作者单位： | 马健（复旦大学力学与工程科学系,上海,200433）;郭明旻（复旦大学力学与工程科学系,上海,200433）;徐有恒（复旦大学力学与工程科学系,上海,200433） |
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| 基金项目： | 上海市建设技术发展基金资助(A9605101);上海市工程结构新技术重点实验室资助 |
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| 摘 要： | 本文研究了在大气边界层气流中同轴双方柱气动力载荷的相互干扰,讨论了这种干扰与风向角和间距比之间的关系.结果表明处于相邻方柱的干扰下,上游方柱的最大气动力载荷大于单体的载荷;而下游方柱则受到前柱明显的阻挡作用,不仅如此,当风向角为0°,小间距下的后柱,不但没有阻力,还会受到反向的摧力.还发现在串列情况下存在和双圆柱类似的临界间距,阻力和升力在临界间距附近有明显的突变.同时将本实验的结果和一些文献中的结果进行了比较.
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| 关 键 词： | 双方柱绕流 气动力载荷 相互干扰 大气边界层 建筑物 风载荷 |
| 修稿时间： | 1999年9月13日 |
Interference Effects on Wind Loads of Two Prismatic Cylinders Arranged in a Line |
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| MA Jian,GUO Ming-min,XU You-heng.Interference Effects on Wind Loads of Two Prismatic Cylinders Arranged in a Line[J].Chinese Quarterly Mechanics,2000,21(3):365-370. |
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| Authors: | MA Jian GUO Ming-min XU You-heng |
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| Abstract: | The interference effects on wind loads of two prismatic cylinders arranged in a line were studied in this paper. The experiments were conducted in an atmosphere boundary layer wind tunnel in Fudan University, and the flow field was simulated as terrain C in Chinese code. The interference effects were seriously in some arrangements (space ratio and azimuth) . The maximum wind loads on upstream prismatic cylinder were greater than those on single prism. And downstream prismatic cylinder was got negative force in some azimuths. When two prismatic cylinders were in tandem arrangement, a critical space was found as two circle cylinders undergo in the same situation. Around the critical space, the drag and lift force changed remarkably. The results in this paper were compared with that in other relative literatures. |
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| Keywords: | flow around two prismatic cylinders wind load interference atmosphere boundary layer |
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