气流诱导技术在扁平地下车库的防排烟模拟研究

Numerical study on application of inductive flow for smoke control in underground garage

通过分析地下车库类建筑火灾特点以及射流风机流场结构,提出利用射流风机的导流作用辅助排烟的做法,并进行了CFD模拟验证。结果显示,射流风机经过合理布置,可以提高地下车库内的排烟效率,使空间内维持一定面积的清晰区域,有利于消防员快速寻找火源,遏制严重后果的发生。

Based on the character of fire in underground garage and stream field of jet fans, a concept of fire protection design for this site is introduced, where inductive fans is employed. And a computational fluid dynamic tool, FDS, is used to validate its feasibility. It is shown that reasonable jet fan system can improve the effect of smoke extraction in underground garage. The enough clear area could be produced. Thus, firefighter could find the fire source quickly and control the more dangerous trouble.