高层住宅排烟管道尺寸的优化设计

Optimal Design of the Flue Size Based on Fluent

在主烟道截面面积不变的前提下,改变烟道的几何尺寸,采用数值模拟的方法对主烟道内烟气的温度场和速度场进行研究.对比分析了不同几何尺寸主烟道出口截面的平均速度、平均温度、最高温度.结果表明,烟道的排烟效率随着边界系数的改变而改变.当k增至最大值为1.73时,烟道的排烟效果最好.

The temperature field and velocity field of the flue collector are researched by the method of numerical simulation,under the condition that the area of the flue collector is same while the geometry size of the flue is changing. The average velocity, average temperature and the highest temperature should be analyzed in different conditions. The results indicate that the variation characteristics of the smoke extraction efficiency with the changes of cofficient k. Especially when k arrive the maximize,the smoke extraction efficiency works best.