A Review of Instability Criteria of Smoke Layers under Sprinkler Spray

摘要：

Three different criteria have been developed to determine the smoke layer behavior under sprinkler spray and these are known as the Bullen criterion, the Zhang criterion and the Li criterion. A review is carded out theoretically and experimentally to validate these criteria. The experimental results have shown that the values of all three criteria are less than unity when a smoke layer is stable under sprinkler spray, but only the Li criterion becomes greater than unity after smoke logging occurs. When the three criteria are physically compared the results show that the spatial distribution has a significant impact on the smoke layer behavior and also determines the shape of the smoke logging plume.

关键词： Sprinkler spray smoke logging drag force buoyancy smoke layer

作者: K.Y.Li M.J.Spearpoint

作者单位: Department of Civil and Natural Resources Engineering,University of Canterbury,Christchurch 8140,New Zealand

会议类型: 国际会议

会议名称: 2009 International Symposium on Fire Science and Fire-Protection Engineering(2009火灾科学与消防工程国际学术会议)

会议地点: 北京

会议语种:英文

页码: 70-77

在线出版日期: 2009-10-17（万方平台首次上网日期，不代表论文的发表时间）