Numerical Analysis of Aerodynamic Coefficients for Catwalk Considering ReynoldsNumber Effect on Long-span Suspension Bridge During the Construction
[1]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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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
36
Number of periods:
2015 04
Page number:
57-61
Column:
Public date:
2015-08-31
- Title:
- Numerical Analysis of Aerodynamic Coefficients for Catwalk Considering ReynoldsNumber Effect on Long-span Suspension Bridge During the Construction
- Keywords:
- suspension bridge; catwalk ; aerodynamic coefficient; numerical simulation; turbulence model; Reynolds number effect ; ventilate rate
- CLC:
- U443.38
- 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.
- References:
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