Experimental Study of Fire Growth and Modelling of Flame Spread Behavior on Solids

Kazemi Ghalehjough, Farzaneh and Najafi, Arash and Nematollahzadeh, Ali (2015) Experimental Study of Fire Growth and Modelling of Flame Spread Behavior on Solids. Masters thesis, University of Mohaghegh Ardabili.

Text Farzaneh Kazemi Ghalehjough.pdf Download (1MB)

Abstract

Solid materials are using as walls, construction materials,… in industrial units and buildings. As it is clear a dangrous fire could begin with a small spark and it could spread all over the combostible materials in presence of oxygen and enough heat, so study about flame spread behaviour on different materials is so important and it is helpful to choose more safety material between construction materials with the same applications. Upward flame spread is the most dangrous type of flame spread that has the least distance between the flame and combustible material and the most velocity of flame spread, so it had studied in this research. analytical modelling with the radiation effect, numerical modelling with the radiation effect, analytical modelling without the radiation effect and numerical modelling without the radiation effect with the minimum simplification had done for “plaster” and “fibre” as two different materials with different type of flame spread. in order to offer the most safety solution, four new solutions had been compared with the old solutions which are analytical modelling without the radiation effect with the other simplifying assumptions. By comparing the methods of flame spread modelling, realized that the previous methods are less accurate than the methods presented in this study and With regard to the effects of radiation in modelling, reaching to the ignition time has been postponed, so Modelling with the effects of the radiation are less safe than other methods. According to direct relationship between the slope of material and the rate of flame spread on it, using some experimentions, the empirical relationship for the rate of flame spread angle of the material presented.

Actions (login required)

View Item