主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

消防科学与技术 ›› 2022, Vol. 41 ›› Issue (12): 1644-1648.

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密闭机舱双火源燃烧质量损失研究

汪 哲,刘家豪,黎东霞,柴欣成   

  1. (上海海事大学 海洋科学与工程学院,上海 201306)
  • 出版日期:2022-12-15 发布日期:2022-12-16
  • 作者简介:作者简介:汪 哲(1998— ),男,上海海事大学海洋科学与工程学院硕士研究生,主要从事船舶火灾机理研究,上海市浦东新区南汇新城镇海港大道1550号,201306。
  • 基金资助:
    :国家自然科学基金青年项目(51909152);上海市青年科技英才扬帆计划项目(18YF1409600)

Research on mass loss of double fire sources in a sealed ship engine room

Wang Zhe, Liu Jiahao, Li Dongxia,Chai Xincheng   

  • Online:2022-12-15 Published:2022-12-16

摘要: 摘 要:在3 m×3 m3.5 m的缩尺度船舶密闭机舱中,设置边长分别为10,15,20 cm的正方形双油池,试验研究双油池不同间距下的燃烧速率变化规律。结果表明:密闭舱室内的双油池火可分为初始、稳定、熄灭三个典型燃烧阶段,不同面积油池的无量纲间距S/L与燃烧速率之间呈现抛物线关系且质量损失率达到峰值时S/L的阈值在0.70~0.85,这与开放空间以及隧道半封闭空间下的双火源发展有很明显的区别。在此基础上,给出了密闭舱室内修正间距S的无量纲热释放速率预测模型。

关键词: 关键词:密闭舱室, 双火源, 火源间距, 质量损失率

Abstract: The fire experiments were carried out in a 3 m (length) × 3 m (width) × 3.5 m (height) confined cabin with square double oil pools with side lengths of 10, 15, 20 cm, respectively, at different spacings to investigate the variation law of combustion rate. The results show that the double oil pool fire in the confined compartment can be divided into three typical combustion stages: initial, stable and extinguished, and the dimensionless spacing S/L of different oil pools shows a parabolic relationship with the combustion rate and the threshold value of S/L at the peak of mass loss rate is between 0.70 and 0.85, which is obviously different from the development of double fires in open space and tunnel semi-enclosed space. On this basis, a prediction model for the dimensionless heat release rate in a confined compartment with a modified spacing S is given.

Key words: sealed ship engine room, double fire sources, fire source distance, mass loss rate