Using FDS, 15 simulation conditions were set according to the control variable method in design manual for ventilation,the effect of width, height of the outside ventilation pipeline and its distance from the top of the ceiling on the action of smoke detector are analyzed. Combined with the simulation results, suggestions were proposed on set of outside ventilation pipeline and smoke de-tector in fire design and engineering applications.%利用FDS,根据通风管道设计手册控制变量法设置15个模拟工况,分别对外置式通风管道宽度、高度、顶部距顶棚的距离等对感烟探测器动作影响进行研究.模拟结果表明,通风管道宽度对感烟探测器动作的影响较大.结合模拟结果,对建筑设计和工程应用中外置式通风管道的设置和感烟探测器的布置提出相关建议.
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