基于混沌理论的轰燃判据的研究.pdfVIP

基于混沌理论的轰燃判据研究 1 2 3 宋 飞 王婷婷 陈爱平 （1.上海市公安消防总队特勤支队金桥中队，上海 201206 ；2. 上海市公安消防总队奉贤支队 防火处，上海 201406 ；3. 中国人民武装警察部队学院训练部，廊坊 065000 ） 摘 要：如果室内火灾在初期得不到有效控制，就很可能发生轰燃，达到全面发展阶段。轰燃一旦发生，室内瞬 间一片火海，并产生喷出火焰，给被困人员逃生和消防人员施救带来极大的困难，后果十分严重。因此，准确预 测轰燃的发生，深入研究喷出火焰的问题，就显得非常重要和十分紧迫。考虑到轰燃作为一种非线性、非稳定的 动力学过程，本文基于混沌理论，在研究大量以有机玻璃做为燃料的小规模室内火灾实验结果的基础上，得出了 一种新的、通过温度变化率表征的轰燃判据。新轰燃判据的提出，既提高了预测轰燃的准确性，又进一步拓宽了 轰燃的理论范畴。 关键词：安全系统工程；混沌理论；轰燃判据；特征曲线 Studies of Criteria of Flashover Based on Chaos Theory 1 2 3 SONG Fei , WANG Tingting ，CHEN Aiping (1.Jin Qiao Fire Station, Special Affair Brigade of Shanghai Fire bureau, Shanghai 201206, China;2. Dep.of Fire protection, Feng Xian Fire Brigade of Shanghai Fire Bureau, Shanghai 201406, China 3. Dep. of Training, Chinese People’s Armed Police Force Academy, Hebei,LangFang,065000, China) Abstract: Flashover will likely occur in a compartment fire if it cannot be controlled effectively during the initial stage, and then it will enter the stage of fully developed fire. Once flashover occurs in an enclosure, the fire will quickly engulf the entire enclosure and even issue from vent openings. Under this situation, it is very difficult for people in the enclosure to escape and for firemen to fight. So it is very important and urgent to predict accurately flashover and study further extrusive flame.Considering that flashover is a non-linear and unsteady dynamic process, it was further studied based on the chaos theory. According to a vast