[1]李胜利,胡亚楠,杜道倾,等.大跨径悬索桥施工猫道气动力系数数值分析[J].郑州大学学报(工学版),2015,36(04):57-61.[doi:10.3969/ j. issn.1671 -6833.2015.04.014]
　Ll Sheng-li,HU Ya-nan,DU Dao-qing,et al.Numerical Analysis of Aerodynamic Coefficients for Catwalk Considering ReynoldsNumber Effect on Long-span Suspension Bridge During the Construction[J].Journal of Zhengzhou University (Engineering Science),2015,36(04):57-61.[doi:10.3969/ j. issn.1671 -6833.2015.04.014]
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大跨径悬索桥施工猫道气动力系数数值分析()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
36
期数:
2015年04期
页码:
57-61
栏目:
出版日期:
2015-08-31

文章信息/Info

Title:
Numerical Analysis of Aerodynamic Coefficients for Catwalk Considering ReynoldsNumber Effect on Long-span Suspension Bridge During the Construction
作者:
李胜利; 胡亚楠; 杜道倾; 王东炜
郑州大学土木工程学院,河南郑州 450001
Author(s):
Ll Sheng-li; HU Ya-nan; DU Dao-qing; WANG Dong-wei
School of Civil Engineering，Zhengzhou University，Zhengzhou 450001 ,China
关键词:
悬索桥; 猫道; 气动力系数; 数值模拟; 湍流模型; 雷诺数效应; 透风率
Keywords:
suspension bridge;  catwalk ; aerodynamic coefficient; numerical simulation; turbulence model; Reynolds number effect ;  ventilate rate
分类号:
U443.38
DOI:
10.3969/ j. issn.1671 -6833.2015.04.014
文献标志码:
A
摘要:
为了探讨用数值方法研究大跨径悬索桥猫道的气动力系数,并且考虑雷诺数效应的影响,以某大跨径悬索桥为背景,分别利用计算流体力学软件Fluent中的标准h-s模型、RNG h-s模型和SST模型，且采用一定的猫道透风率进行二维数值模拟,对猫道的气动力系数在不同风速、不同攻角和不同雷诺数情况下进行CFD识别,并与相应风洞试验的结果进行对比分析.结果表明:雷诺数的变化对阻力系数影响较小,但对升力系数影响较大,因此在进行猫道的数值模拟时,选择合适的雷诺数很有必要;SST湍流模型是猫道断面CFD 识别中较合理的模型;模拟的猫道透风率是可行的.
Abstract:
Based on the long-span suspension bridge,and by means of the computational fluid dynamics soft-ware fluent,three different turbulence models such as the standard h-s model,RNG k-g model and SST mod-el,have been used to recognize the aerodynamic coefficients of catwalk in the condition of different windspeeds,wind attack angles and Reynolds number with a ventilate rate of catwalk.The results of CFD identifi-cation are compared with the corresponding results of wind tunnel tests.Comparing the results of numericalsimulation with those of wind tunnel test,it is proved that the variation of the drag coefficients is smaller withthe different Reynolds number,but that of the lift coefficients is bigger. So the appropriate Reynolds number isvery necessary for the catwalk numerical simulation.The results show that the SST model for CFD method ofthe catwalk section is reasonable model,and the ventilate rate of simulation for catwalk is feasible.

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