Abstract
Firefighting by sealing the cabin is often served as a final-taken and efficient means of suppressing ship fire.
When a fire occurs in a closed engine room, it could cause the internal pressure increased and the oxygen
concentration decreased, which further affects the fire burning processes. The interaction between the combustion
processes and the changing environment makes sealed fires even complicated. This study investigates the
behaviors of smoke plume entrainment and filling in a sealed ship engine room. Theoretical models regarding the
plume entrainment and smoke filling are developed, respectively. A new reverse analysis method by coupling
particle swarm optimization (PSO) with the smoke filling model is proposed to determine the unknowns in the
plume entrainment model. Based on the experimental data in the literature and the reverse analysis, the explicit
smoke filling model of sealed ship engine room is developed. Several previous experimental measurements and
numeric simulations are used to validate its prediction ability. The results also suggest that a sealed fire has a
higher smoke entrainment level than an open case. The proposed sealed ship engine room fire model can be
applied to the engineering safety design of cases with potential sealed fires.
When a fire occurs in a closed engine room, it could cause the internal pressure increased and the oxygen
concentration decreased, which further affects the fire burning processes. The interaction between the combustion
processes and the changing environment makes sealed fires even complicated. This study investigates the
behaviors of smoke plume entrainment and filling in a sealed ship engine room. Theoretical models regarding the
plume entrainment and smoke filling are developed, respectively. A new reverse analysis method by coupling
particle swarm optimization (PSO) with the smoke filling model is proposed to determine the unknowns in the
plume entrainment model. Based on the experimental data in the literature and the reverse analysis, the explicit
smoke filling model of sealed ship engine room is developed. Several previous experimental measurements and
numeric simulations are used to validate its prediction ability. The results also suggest that a sealed fire has a
higher smoke entrainment level than an open case. The proposed sealed ship engine room fire model can be
applied to the engineering safety design of cases with potential sealed fires.
Original language | English |
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Article number | 110521 |
Journal | Ocean Engineering |
Volume | 245 |
DOIs | |
Publication status | Published - 2022 |