• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 29 Issue 4
Jul.  2016
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Article Contents
YU Jianhan, LI Mingshui, LIAO Haili. Numerical Simulation of Effect of Mountainous Topography on Wind Field at Bridge Site[J]. Journal of Southwest Jiaotong University, 2016, 29(4): 654-662. doi: 10.3969/j.issn.0258-2724.2016.04.008
Citation: YU Jianhan, LI Mingshui, LIAO Haili. Numerical Simulation of Effect of Mountainous Topography on Wind Field at Bridge Site[J]. Journal of Southwest Jiaotong University, 2016, 29(4): 654-662. doi: 10.3969/j.issn.0258-2724.2016.04.008

Numerical Simulation of Effect of Mountainous Topography on Wind Field at Bridge Site

doi: 10.3969/j.issn.0258-2724.2016.04.008
  • Received Date: 07 May 2015
  • Publish Date: 25 Aug 2016
  • The influence of topographic features of mountainous area on the wind field distribution at bridge sites was investigated with a computational fluid dynamics software FLUENT by taking a long-span bridge crossing a deep valley as an engineering example. The simulation method was verified by comparing the numerical results with ones obtained from the wind tunnel testing. Through comparative analysis of cases with different wind directions, the distribution characteristics of wind velocity, wind attack angle and mean wind profiles at the bridge site under different flow directions were studied, and also the magnification factors caused by the effect of valley wind were discussed. The results show that the wind velocity distribution and wind profiles along the bridge deck would be influenced by the nearby mountains, and downward wind attack angle appears on this side; distortion of wind profile would happen at the lower part of the valley; and wind velocity accelerations would happen at the mid-span when the wind flow direction is aligned with the valley.

     

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