采用FDS模型模拟了大空间内发生火灾的烟气运动过程，分析了不同排烟模式下烟气控制的效果。
Based on FDS model of Simulation smoke movement in large space, this paper analyses smoke control effect in different smoke exhaust patterns.
通过中性和不稳定层结条件下不同叶面积指数算例的模拟分析及与已有观测结果的比较表明，本文所建大涡模式对森林冠层和森林边界层有较好的模拟效果。
The analysis of simulation results and the comparison with observational data show that the LES model simulates the turbulent flow in forest canopy and forest boundary layer very well.
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