Wind and Structures

Techno-Press (테크노프레스)
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Wind field simulation over complex terrain under different inflow wind directions

  • Huang, Wenfeng (School of Civil Engineering, Hefei University of Technology) ;
  • Zhang, Xibin (School of Civil Engineering, Hefei University of Technology)
  • Received : 2018.03.13
  • Accepted : 2018.10.11
  • Published : 2019.04.25
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Abstract

Accurate numericalsimulation of wind field over complex terrain is an important prerequisite for wind resource assessment. In this study, numerical simulation of wind field over complex terrain was further carried out by taking the complex terrain around Siu Ho Wan station in Hong Kong as an example. By artificially expanding the original digital model data, Gambit and ICEM CFD software were used to create high-precision complex terrain model with high-quality meshing. The equilibrium atmospheric boundary layer simulation based on RANS turbulence model was carried out in a flat terrain domain, and the approximate inflow boundary conditions for the wind field simulation over complex terrain were established. Based on this, numerical simulations of wind field over complex terrain under different inflow wind directions were carried out. The numerical results were compared with the wind tunnel test and field measurement data for land and sea fetches. The results show that the numerical results are in good agreement with the wind tunnel data and the field measurement data which can verify the accuracy and reliability of the numerical simulation. The near ground wind field over complex terrain is complex and affected obviously by the terrain, and the wind field characteristics should be fully understood by numerical simulation when carrying out engineering application on it.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China, Central Universities

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