Étude expérimentale et numérique des interactions entre dispositifs d'évacuation naturelle de fumées et de chaleur et systèmes d'extinction automatique à eau

Abstract : This work is devoted to the study of interactions between smoke and heat exhaust ventilation systems (SHEAVS) and automatic fire sprinklers. Two real scales experimentation campaigns involving sprinklers and SHEAVS have been carried out in fire test facilities at CNPP (France). A total of 98 instrumented tests have been conducted with various fuel type, experimental configuration and activation time of both systems. Collected datas include smoke free layer height, temperature field and automatic sprinkler activation time. These results are used to build a database in order to create a validation case for the software Fire Dynamics Simulator (FDS). Numerical simulations of several tests are conducted using experimental data as input parameters. Results are then confronted to measurements. A good agreement between these results allows us to use FDS in order to realize mass and energy balances for various scenarios. Using knowledge acquired during both campaigns, numerical simulations of fire scenarios in two actual facilities have been conducted. For both configuration, various SHEAVS activation time have been tested and results (temperature levels, time and number of activated sprinklers, heat and mass transfer) have been confronted
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Nicolas Trevisan. Étude expérimentale et numérique des interactions entre dispositifs d'évacuation naturelle de fumées et de chaleur et systèmes d'extinction automatique à eau. Sciences de l'ingénieur [physics]. Université de Lorraine, 2018. Français. ⟨NNT : 2018LORR0093⟩. ⟨tel-01902664⟩

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