侧室-走廊烟气运动特性的盐水模型  

Salt Water Modeling of the Characteristics of Fire Smoke Movement in a Corridor

作　　者：张和平[1] 谢之康[1] 姜锡权[2] 霍然[1] 范维澄[1] 

机构地区：[1]中国科学技术大学火灾科学国家重点实验室 [2]南京工程兵学院人防系

出　　处：《中国科学技术大学学报》1999年第6期664-670,共7页JUSTC

基　　金：国家自然科学基金!(9336110)

摘　　要：运用盐水实验模拟方法与液体双染色技术研究了侧室点火源烟气在走廊内的发展过程和运动特性，证实了走廊内存在着明显的烟气空气分层现象，且烟气在走廊内对环境空气的卷吸作用可忽略不计．通过研究侧室点火源位置、强度等与走廊烟气层运动速度之间的关系，得到了走廊烟气运动的无量纲速度与侧室火源强度无关的结论．最后，应用单室点源羽流模型，通道重力流模型和相似理论，并结合分析实验结果，建立了走廊烟气运动速度的盐水模型．In this paper, salt water simulation and double liquid dying methods were applied to study the movement characteristics of smoke in the corridor of a room corridor building. Two different layers, a smoke layer and an air layer, were proved to exist in the corridor and nearly no interaction between the two layers was observed. Furthermore, it was also found that the dimensionless velocity of the smoke layer was not affected by the heat release rate of the fire source in the room. Finally, by applying the single room point source modeling, gravity current modeling and scaling theory, the velocity modeling of the smoke layer in the corridor was given.

关 键 词：烟气运动 盐水模型 建筑物 火灾 侧室-走廊 

分 类 号：TU998.13[建筑科学—市政工程] X43[环境科学与工程—灾害防治]