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Conditions d'utilisation de modèles numériques pour l'évaluation de scénarios de départ de feu dans un cadre d'investigation post-incendie

Abstract : This work is intended to evaluate the use of numerical models to assess fire scenarios proposed by investigators. First chapter of this thesis is about theoretical fire phenomenon useful in the investigation frame. The second chapter is devoted to the validation of a CFD tool named Fire Dynamics Simulator (FDS) for fire reconstruction purposes. Guidance is developed in the third chapter in order to compare modelling results to degradations observed on fire scenes. It is explained how the accuracy of a scenario could be assessed using several comparison points, the thermal or mechanical effects on materials after a fire. Results obtained in previous chapters are finally applied on two cases. The first one is the comparison of fire spread velocities measured on two different experiments with simulations. This study is carried out to test FDS combustion model under ventilated and underventilated conditions. The second case is the reconstruction of a fire which killed the occupant of an apartment, the purpose of this work being to apply modelling and investigation guidance to a real case.
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  • HAL Id : tel-00557898, version 1

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Mathieu Suzanne. Conditions d'utilisation de modèles numériques pour l'évaluation de scénarios de départ de feu dans un cadre d'investigation post-incendie. Autre [cond-mat.other]. INSA de Rouen, 2009. Français. ⟨NNT : 2009ISAM0015⟩. ⟨tel-00557898⟩

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