Abstract
The purpose of this paper is to describe a mathematical model for the prediction of horizontal axisymmetric spread of smoke front under ceiling. In part II, the result of Part I for the prediction of velocity on smoke front is used, and the conservation of heat and mass in overall smoke layer is considered, then the change of the average temperature of smoke layer is considered. The prediction of a mathematical model in region -II and -III is compared with model experiments using thermal smoke flow.
The calculation results of the front location of smoke flow agree well with the experimental results with changing temperature. Therefore a mathematical model of axisymmetric smoke spread with changing temperature by use of the average temperature is usable to predict the front location of smoke flow.
