烟雾运动程序用于确定火灾期间打开的消防逃生门对高层建筑内烟雾分布的影响。在防火楼层和楼梯中性压力面上下楼层模拟开门。当在整个建筑内打开各种楼梯间门时，估计维持无烟条件所需的楼梯间增压风机的体积流量。加压风机的尺寸受打开楼梯间门的位置影响。如果风机的尺寸不足以克服防火层上的压力，则对走火通道加压的过程可能会导致到达上层的烟雾量增加，并降低楼梯间的空气质量，尤其是如果打开的楼梯间门位于建筑物的上层。 引文:伊利诺伊州芝加哥ASHRAE交易——第121卷第1部分

A smoke movement program is used to determine the influence of open fire escape doors on the distribution of smoke inside a high-rise building during a fire. Open doors are simulated on the fire floor and on floors above and below the stairway neutral pressure plane. The volume flow rates of the stairwell pressurization fans necessary to maintain smoke-free conditions are estimated when various stairwell doors are opened throughout the building. The size of the pressurization fans is shown to be influenced by the location of open stairwell doors. If fans are inadequately sized to overcome the pressure on the fire floor, the process of pressurizing the fire escapes may cause an increase in the amount of smoke that reaches the upper floors and degrade the air quality in the stairwells, particularly if the open stairwell doors are on the upper floors in the building.