[en] In chapter 2, a description of compartment fire physics is given. The development of fires in enclosures is explained and the main physical phenomena are described (rate of heat release, fire plume, vent flow, heat transfer to partitions...). The analytical models and correlations most widely used to model these phenomena are given.The first part of chapter 3 is a review of the existing compartment fire models, from the well-known nominal fire curves to the most sophisticated computational fluid dynamic fire models. Analyses of some of these models are made and the needs for improvements are pointed out in the second part of chapter 3.The description of the zone model developed in this work is given in chapters 4, focused on the formulation of the model. In chapter 5, the different fire scenarios in relation with the model are presented as well as their impact on the design of structural steel elements.Comparisons of the compartment fire model included in OZone with full scale fire tests are presented in chapter 6. These comparisons enable to assess the code and to define some limits beyond which the code is not able to predict reasonably the fire course.Finally in chapter 7, the new parametric fire curves developed by the author are presented.
