微地形对风速影响数值模拟研究
Numerical Simulation Study of the Influence of Micro-Topography on Wind Speed
摘要: 选取中国东部沿海某山区地形为研究对象，运用CFD数值模拟方法，开展了微地形对风速取值的影响。结果表明，微地形对风场的影响较大：山脚处风速较小，而山顶及迎风侧山坡处风速较大，在近山顶区域会出现局部增速而后出现回流现象。所得结果可为针对微地形区域的输电线路杆塔结构风荷载设计提供参考。
Abstract:
The effect of micro-topography on wind speed was studied by using CFD numerical simulation method in mountainous terrain in eastern China. The results show that the micro-topography has a great influence on the wind field: the wind speed at the foot of the mountain is small, but the wind speed at the top of the mountain and the windward side of the mountain is large. What is more, near the top of the mountain, there will be a local increase and then backflow in the wind speed. The results can be used as a reference for wind load design of transmission tower-line system in the micro-terrain region.
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