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串列钝体三分力系数气动干扰效应数值模拟

, PP. 55-62

Keywords: 桥梁工程,气动干扰效应,数值模拟,串列钝体,三分力系数

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Abstract:

为了研究矩形断面、倒直角断面、倒内凹圆弧断面和倒外凸圆弧断面等4种断面的单个和多个钝体存在气动干扰效应的问题,基于有限体积法和SIMPLE算法,对均匀粘性定常流体的雷诺数在亚临界区域的绕流流动进行计算流体动力学(CFD)数值模拟.计算其在不同风攻角、不同倒角尺寸和不同柱体间距情况下的三分力系数,并分析其在不同情况下的气动力系数的变化规律.结果表明对单个钝体而言,各断面在不同风攻角情况下的阻力系数、升力系数和扭矩系数整体上依照矩形断面、倒直角断面、倒内凹圆弧断面和倒外凸圆弧断面的顺序依次减小,而倒直角断面、倒内凹圆弧断面和倒外凸圆弧断面阻力系数、升力系数和扭矩系数随着倒角尺寸的增大,呈减小的趋势;对这2个钝体而言,由于气动干扰效应,下游钝体无论是在变化趋势上还是在数值大小上和上游钝体相比都发生了较大的变化.

References

[1]  DAVID B,WILLIAM H H,Jr.The Interference between Struts in Various Combination,NACA Technical Report 468 [R].
[2]  [S.l.]:NACA,1934.
[3]  ZDRAVKOVICH M M.Review of Flow Interference between Two Circular Cylinders in Various Arrangement [J].Journal of Fluids Engineering ,1977,99(4):618-633
[4]  ZDRAVKOVICH M M.The Effects of Interference between Circular Cylinders in Cross Flow [J].Journal of Fluids and Structures,1987,1(2):239-261.
[5]  ZDRAVKOVICH M M.Interstitial Flow Field and Fluid Forces [C]//Technology for the 90s:A Decade of Progress.New York:ASME,1993:594-658.
[6]  KO N W M,WONG P T Y,LEUNG R C K.Interaction of Flow Structures within Bistable Flow Behind Two Circular Cylinders of Different Diameters [J].Experimental Thermal and Fluid Science,1996,12(1):33-44.
[7]  ALAM M M,ZhOU Y.Strouhal Number,Forces and Flow Structures around Two Tandem Cylinders of Different Diameters [J].Journal of Fluids and Structures,2008,24(4):505-526.
[8]  LIU Xianzhi,MARC L,NIKITOPOULOS D.Wind Tunnel Tests for Mean Drag and Lift Coefficients on Multiple Circular Cylinders Arranged In-line [J].Journal of Wind Engineering and Industrial Aerodynamics,2008,96(6/7):831-839.
[9]  LUO S C,LI L L,SHAH D A.Aerodynamic Stability of the Downstream of Two Tandem Square-section Cylinders [J].Journal of Wind Engineering and Industrial Aerodynamics,1999,79(1/2):79-103.
[10]  MURAKAMI S,MOCHIDA A,SAKAMOTO S.CFD Analysis of Wind-structures Interaction for Oscillating Square Cylinders[J].Journal of Wind Engineering and Industrial Aerodynamics,1997,72(1):33-46.
[11]  TAYLOR I,VEZZA M.Prediction of Unsteady Flow around Square and Rectangular Section Cylinders Using a Discrete Vortex Method [J].1999,82(1/2/3):247-269.
[12]  SQUIRES K D,KRISHNAN V,FORSYTHE J R.Prediction of the Flow Over a Circular Cylinders at High Reynold Number Using a Detached-Eddy Simulation [J].Journal of Wind Engineering and Industrial Aerodynamics,2008,96(10/11):1528-1536.
[13]  曹丰产,项海帆.圆柱非定常绕流及涡致振动的数值计算[J].水动力学研究与进展:A 辑,2001,16(1):111-118.CAO Fengchan,XIANG Haifan.Calculation of Unsteady Flow around Circular Cylinder and Vortex-Induced Vibration [J].Journal of Hydrodynamics,2001,16(1):111-118.
[14]  谢壮宁,顾明.任意排列双柱体的风致干扰效应[J].土木工程学报,2005,38(10):32-38.XIE Zhuangning,GU Ming.Wind-induced Interference Effects between Two Arbitrarily Arranged Prisms [J].China Civil Engineering Journal,2005,38(10):32-38.
[15]  韩宁,顾明.两串列方柱局部脉动风压干扰研究:第 1 部分迎风面效应[J].振动与冲击,2009,28(12):188-192.HAN Ning,GU Ming.Interference Effects on Local Fluctuating Pressure on Two Square Tall Buildings in Tandem Arrangement:Part 1 Windward Side Effects [J].Journal of Vibration and Shock,2009,28(12):188-192.
[16]  楼小峰,曹丰产,林志兴.串列钝体绕流的数值计算 [J].同济大学学报:自然科学版,2002,30(5):604-608.LOU Xiaofeng,CAO Fengchan,LIN Zhixing.Numerical Simulation of Flows around Two Bluff Bodies in Tandem Arrangements [J].Journal of Tongji University:Natural Science Edition,2002,30(5):604-608.
[17]  TAMURA T,MIYAGI T,KITAGISHI T.Numerical Prediction of Unsteady Pressures on a Square Cylinder with Various Corner Shapes[J].Journal of Wind Engineering and Industrial Aerodynamics,1998,74/75/76:531-542.
[18]  TAMURA T,MIYAGI T.The Effect of Turbulence on Aerodynamic Forces on a Square Cylinder with Various Corner Shapes [J].Journal of Wind Engineering and Industrial Areodynamics,1999,83(1):135-145.
[19]  JTG/T D60-01—2004,公路桥梁抗风设计规范[S].JTG/T D60-01—2004,Wind-resistant Design Specification for Highway Bridges [S].
[20]  ALONSO G,MESEGUER J.A Parametric Study of the Galloping Stability of Two-dimensional Triangular Cross-section Bodies [J].Journal of Wind Engineering and Industrial Aerodynamics,2006,94(4):241-253.
[21]  ALONSO G,MESEGUER J.PEREZ-GRANDE I.Galloping Stability of Triangular Cross-Sectional Bodies:A Systematic Approach [J].Journal of Wind Engineering and Industrial Aerodynamics,2007,95(9/10/11):928-940.
[22]  谭红霞,陈政清.CFD 在桥梁断面静力三分力系数计算中的应用[J].工程力学,2009,26(11):68-72.TAN Hongxia,CHEN Zhengqing.Application of CFD in Calculating Static Coefficients of Bridge Section [J].Engineering Mechanics,2009,26(11):68-72.
[23]  顾明,项海帆.斜拉桥桥塔的驰振响应分析[J].空气动力学学报,1991,9(4):487-494 GU Ming,XIANG Haifan.Galloping Responses of Cablestayed Bridge Pylons [J].Acta Aerodynamica Sinica,1991,9(4):488-494.
[24]  邓文,葛耀君,曹丰产.桥梁闭口箱梁三分力数值识别中的湍流模型比选[J].上海公路,2006(4):36-40.DENG Wen,GE Yaojun,CAO Fengchan.Influence of Turbulence Model in Numerical Identification of Aerostatic Force for Box Section Girder Bridge [J].Shanghai Highways,2006(4):36-40.

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