ABSTRACT

This introduction presents an overview of the key concepts discussed in the subsequent chapters of this book. The book discusses sources of error in the process of using a model and offers a general categorization intended to help stimulate discussion and further work. It presents a non-linear model FLASHOVER A1, within a zonal formulation which may be used to predict the geometrical and thermo-physical conditions which lead to an instability in the system. The book provides a framework in which the operative conditions of existing buildings can be assessed on a probabilistic basis. It suggests that numbers assigned to parameters for use in models give rise to uncertainties with numerical input associated with physical parameters; numerical solution techniques; software error; hardware faults and application error. The book concludes the effect of thermal radiation is important, even in small fires and that the simple six-flux model suffices for small compartment fires up to 100 kW.