火灾现象与非线性(Ⅱ)—突变火灾学

Fire Phenomena and Nonlinearity(Ⅱ) ——Catastrophic Fire Dynamics

指出突变是引发火灾或使灾害扩大最重要的非线性机制之一 ,在火灾过程中大量存在 .阐述了突变火灾学的主要任务在于分析火灾系统中非连续性现象的突变机理 ,寻找火灾系统非连续性现象的控制途径 ,定性分析火灾系统动力学特性 ,及对火灾系统非连续性现象进行突变分类 .认为其它学科如物理学、化学、生物学、地学、天文学、灾害学乃至社会科学也可采用类似的方法建立相应的突变学分支学科和相应的突变分类方法 .从突变动力学观点分析了辐射控制下均温热爆炸系统的突变特性 。

As one of the most important nonlinear mechanisms to cause fire or exacerbate fire disaster, there is a great deal of catastrophe behaviors existing in fire processes. The main tasks of catastrophic fire dynamics are: 1) analyzing the catastrophe mechanisms of discontinuity behaviors in fire systems; 2) investigating the controlling methods of discontinuity behaviors of fire systems; 3) qualitative analyzing of dynamical characteristics of fire systems; and 4) catastrophe classifying of discontinuity phenomena in fire systems. The other disciplines, such as physics, chemistry, biology, geoscience, astronomy, or even social sciences (for instance political science, economics, strategics and management science), may also take the similar method to establish the corresponding branch discipline of catastrophe science and catastrophe classification method. It is pointed out that an ignition behavior of the uniform temperature thermal explosion system under the control of radiation has cusp catastrophe mechanism.