全尺寸船舶机舱火灾发展及烟气充填行为

发布时间：2018-03-08 11:51

本文选题：船舶火灾安全　切入点：全尺寸实验　出处：《工程热物理学报》2017年02期 　论文类型：期刊论文

【摘要】：船舶机舱是火灾高发场所,其空间高大且相对封闭,火灾特性与一般建筑具有明显不同。本文基于全尺寸船舶机舱火灾试验台(22.4 m×12 m×14 m)开展了不同火灾规模情况下的火灾基本特性和烟气充填规律的研究。结果发现:封闭机舱空间内火源功率随时间表现出先增长后稳定的变化规律,且增长阶段火源功率随时间线性增长。单位面积火源功率随火灾规模的变化规律与开放空间类似,随之增大而增大。另外,本文基于理想羽流模型和质量守恒,发展了考虑温度梯度分布的烟气沉降预测模型,提高了烟气层沉降规律的预测精度。
[Abstract]:The ship engine room is a high fire place, its space is tall and relatively closed, The characteristics of fire are obviously different from those of general buildings. Based on the full-size marine engine room fire test rig 22.4 m 脳 12 m 脳 14 m), the basic fire characteristics and smoke filling law under different fire scales are studied. The results show that the characteristics of fire are different from those of normal buildings. The power of fire source in the enclosed engine room increases first and then changes steadily with time. And the power of fire source increases linearly with time in the growth stage. The variation law of the power of fire source per unit area with the fire scale is similar to that of open space and increases with it. In addition, based on the ideal plume model and the conservation of mass, the variation of fire source power per unit area is similar to that of open space. The prediction model of flue gas subsidence considering temperature gradient distribution is developed, and the prediction precision of smoke layer settlement law is improved.
【作者单位】：中国舰船研究设计中心;武汉理工大学资源与环境工程学院;香港理工大学建筑环境学院;
【基金】：国家自然科学基金项目(No.51404178) 国家科技支撑计划课题(No.2015BAK40B01) 国家重点研发计划(No.2016YFC0802801)
【分类号】：U698.4

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