水喷淋控制下小室火灾的数值模拟研究

研究了水喷淋控制下对小室火灾发展过程的影响，结合一安装有水喷淋的实体小室，采用数值模拟方法进行了初步分析，设计了没有喷淋、0．1MPa喷淋控制和0．2MPa喷淋控制等三种工况。结果表明，水喷淋的启动，虽然可以控制火灾的发展，降低小室内的烟气温度，但也会增加烟气的生成量，使溢出的烟气增加。同时，水喷淋的压力增加，小室内的烟气温度继续下降，CO、炭黑以及水蒸气的生成量也会随之增加。这些都对大空间的人员安全疏散以及大空间整体的消防安全带来很大的影响。

Numerical simulation study on cabin fire under sprinkler control

The cabin fire growth process under sprinkler was studied. According to one real cabin with sprinkler, numerical simulation was used for preliminary analysis. There were three design scenarios: no sprinkler, 0.1 MPa sprinkler, and 0.2 MPa sprinkler. Results showed, after sprinkler was operated, cabin fire could be controlled, and the smoke temperature in cabin decreased, but the produced and spilled out smoke increased greatly. With increasing sprinkler, the smoke temperature in cabin continued decreasing, but the produced CO, soot and vapor increased. All these will greatly affect occupant safety evacuation and the total fire safety in large space buildings.