| Issue |
E3S Web Conf.
Volume 185, 2020
2020 International Conference on Energy, Environment and Bioengineering (ICEEB 2020)
|
|
|---|---|---|
| Article Number | 02021 | |
| Number of page(s) | 5 | |
| Section | Energy Saving and Environmental Protection Technology | |
| DOI | https://doi.org/10.1051/e3sconf/202018502021 | |
| Published online | 01 September 2020 | |
Numerical study of the aerodynamic characteristics around typical terrain with different temperature
1 State Kay Laboratory of Disaster Prevention and Reduction for Power Grid Transmission and Distribution Equipment, Changsha, China
2 Disaster Prevention and Reduction Center, State Grid Hunan Electric Power Company Limited, Changsha, China
3 College of Mathematics and Systems Science, Guangdong Polytechnic Normal University, Changsha, China
* Corresponding author: shifengwu@lsec.cc.ac.cn
The distributions of near-surface meteorological elements, such as wind, are greatly affected by the terrain underneath, which makes the power structure of micro geomorphic area more vulnerable to the influence of local climate. Single hills with length are one of typical terrains in microrelief. In this paper, the circulation caused by buoyant flows and temperate within typical single hilly terrain with length is studied. The Detached Eddy Simulation (DES) is used to integrate buoyancy, turbulence and micro-terrain into a single model and it is applied to the special situation of micro-terrain climate. How the wind field is influ-enced by different surface temperature and the model surface roughness is carefully described. The results show that, different surface temperature has a very strong effect on the speedup ratio. Compared with the air temperature, the lower the terrain surface temperature is, the more obvious the speedup ratio effect is, and vice versa. For different roughness surface terrain, the speedup ratio has almost the same characteristics.
© The Authors, published by EDP Sciences, 2020
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