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不同初始温度对航空煤油表面火蔓延的影响
  • ISSN号：1006-8740
  • 期刊名称：《燃烧科学与技术》
  • 时间：0
  • 分类：TK16[动力工程及工程热物理—热能工程]
  • 作者机构：[1]中国科学技术大学火灾科学国家重点实验室,合肥230026, [2]安徽理工大学化学工程学院,淮南232001
  • 相关基金：国家自然科学基金资助项目（51036007）
作者： 郭进[1,2], 陆守香[1], 周劼波[1], 王昌建[1]
关键词： 火蔓延, 航空煤油, 表面流, 温度分布, 脉动频率, flame spread, aviation kerosene, surface flow, temperature profile, pulsation frequency
中文摘要：

采用微细热电偶、红外热像仪、CCD摄像及纹影技术对不同初始温度航空煤油表面火蔓现象及机理进行实验研究.结果表明：当航空煤油（开杯闪点为66,℃）的初始温度T0≤82.5,℃时,其火焰蔓延主要受液相控制,在此阶段表面流预热作用是火焰脉动蔓延的主要控制机制,火焰蔓延平均速度随初始温度升高呈指数增长关系;当航空煤油初始温度T0〉82.5,℃时,其火焰蔓延主要受气相控制,火焰蔓延速度依赖于油面上方蒸气浓度.

英文摘要：

Fine thermocouples,infrared thermograph,CCD cameras and schlieren system were applied to study the characteristics and mechanisms of flame spread over aviation kerosene（open cup flash point is 66,℃）.Two control-ling mechanisms were found.For initial temperature T0≤82.5,℃,flame spread was mainly controlled by liquid phase.During the period,surface flow is the main cause for oscillatory regime,and the average flame spread rate increases exponentially with the increase of initial temperature.For initial temperature T0〉82.5,℃,flame spread was mainly controlled by gas phase,and flame spread rate was dependent on the concentration of fuel vapor above liquid surface.

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期刊信息
  • 《燃烧科学与技术》
  • 北大核心期刊（2011版）
  • 主管单位:国家科委
  • 主办单位:天津大学
  • 主编：史绍熙
  • 地址：天津市南开区天津大学19教学楼东配楼J413
  • 邮编：300072
  • 邮箱：rskx@tju.edu.cn
  • 电话：022-27406721
  • 国际标准刊号：ISSN：1006-8740
  • 国内统一刊号：ISSN：12-1240/TK
  • 邮发代号:6-122
  • 获奖情况:
  • EI收录期刊,1997年在天津市评刊中，评为一级期刊,1999年全国科技期刊高校优秀期刊评比三等奖,中国期刊方阵“双效”期刊
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  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）
  • 被引量:6908