機関室火災における煙流動状態に関する模擬実験と数値解析

概要

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In the fire safety design for a ship, the engine room fire due to flammable oil is a very important issue and has received much attention in recent years. However, the nature of the engine room fire is still not well understood due to its extreme complexity of the physical and chemical mechanisms. A series researches have been carried out by the authors to investigate the engine room fire, and the emphasis of the present study is placed on the emission and the movement of the smoke during oil burning, which is very important phenomenon for a successful fire safe design such as setting up escape routes and installing fire detectors. In the present paper, the experiment of smoke movement and diffusion in an engine room model with smoke-producing agent is carried out for the fire safety design on fire detection, fire fighting and evacuation. Moreover, a three-dimentsonal numerical analysis using k-ε based CFD model is performed to investigate the situation of smoke diffusion in engine room model. Then, from the characteristic of smoke obtained by experiment, the validity of numerical analysis is shown herein. Both experimental and numerical results clarified to be useful in designing more effective evacuation systems and more reasonable arrangements of smoke sensors.
2004-03-20