摘要
采用数值模拟的方法,分析了在自然排烟条件下,不同外界风对于中庭内烟气流动特性的影响。通过模拟得出:单侧外界风对于自然排烟烟气流动有明显影响,烟羽流倾斜角度随风速增加而增大,同一时刻相同高度的压力随风速增加而减小,温度大小相对于高度的变化率随风速增加而减小,较大的风速会造成排烟口流量相对于时间的变化率减小。
Based on the numerical simulation, the paper analyzes the influence of different external winds on smoke movement under natural ventilation. The results show that external winds from a single direction have obvious effects on smoke movement under natural ventilation. When the wind speed increases, the fire plum grows severely, the pressure in the same height at the same time turns lower, and the change rate of the gas temperature over time becomes smaller. The winds with high speed will make the flow through smoke vents descend faster.
出处
《沈阳航空航天大学学报》
2013年第1期81-86,共6页
Journal of Shenyang Aerospace University
关键词
外界风
中庭
数值模拟
烟气流动
external winds
atrium
numerical simulation
smoke movement
