吴倩云, 孙亚松, 刘小兵. 并列双方柱气动特性的干扰效应研究[J]. 工程力学, 2020, 37(S): 265-269. DOI: 10.6052/j.issn.1000-4750.2019.04.S007
引用本文: 吴倩云, 孙亚松, 刘小兵. 并列双方柱气动特性的干扰效应研究[J]. 工程力学, 2020, 37(S): 265-269. DOI: 10.6052/j.issn.1000-4750.2019.04.S007
WU Qian-yun, SUN Ya-song, LIU Xiao-bing. STUDY ON THE AERODYNAMIC INTERFERENCE EFFECT OF TWO SIDE-BY-SIDE SQUARE CYLINDERS[J]. Engineering Mechanics, 2020, 37(S): 265-269. DOI: 10.6052/j.issn.1000-4750.2019.04.S007
Citation: WU Qian-yun, SUN Ya-song, LIU Xiao-bing. STUDY ON THE AERODYNAMIC INTERFERENCE EFFECT OF TWO SIDE-BY-SIDE SQUARE CYLINDERS[J]. Engineering Mechanics, 2020, 37(S): 265-269. DOI: 10.6052/j.issn.1000-4750.2019.04.S007

并列双方柱气动特性的干扰效应研究

STUDY ON THE AERODYNAMIC INTERFERENCE EFFECT OF TWO SIDE-BY-SIDE SQUARE CYLINDERS

  • 摘要: 为了研究并列双方柱在不同间距比时气动力特性的干扰效应,采用刚性模型测压风洞试验的方法,通过改变两方柱之间的距离,得到了不同间距比下并列双方柱的风压系数、升力系数和阻力系数。结果表明:当间距比1.2≤L/D<2.5时,并列双方柱平均风压系数的干扰效应明显,且主要表现在内侧面,平均阻力系数和脉动升力系数的干扰效应表现为减小效应;当间距比L/D≥2.5时,并列双方柱的平均风压系数、平均阻力系数和脉动升力系数的干扰效应均不明显。

     

    Abstract: To study the interference effect on the aerodynamic characteristics of two side-by-side square cylinders at different spacing ratios, the wind pressure from a wind tunnel test on a rigid model was adopted. By changing the distance between two side-by-side square cylinders, the pressure coefficients and the lift and drag coefficients of two side-by-side square cylinders with different spacing ratios were obtained. The results show that when 1.2≤L/D<2.5, the interference effect on the time-average wind pressure coefficient of the two side-by-side square cylinders is obvious, and is mainly manifested on the inner side. The interference effect on the time-averaged drag coefficient and the fluctuating lift coefficient is a reduction effect. WhenL/D≥2.5, the interference effects on the time-average wind pressure coefficient, the time-average drag coefficient and the fluctuating lift coefficient of the two side-by-side square cylinders are not obvious.

     

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