| 任婕,陶常法,张志阳,宗若雯.多因素下小尺度油罐火火焰倾角的研究[J].火灾科学,2019,28(4):205-210. |
| 多因素下小尺度油罐火火焰倾角的研究 |
| Study on flame tilt angle of small-scale oil tank fires |
| |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| DOI：10.3969/j.issn.1004-5309.2019.04.02 |
| 基金项目:国家重点研发计划项目(2016YFC0802101,2018YFC0808605); 安徽省重点研究及开发计划项目(1804a0802202);国家自然科学基金(51576185) |
| 作者 | 单位 | | 任婕 | 中国科学技术大学火灾科学国家重点实验室,合肥,230026 | | 陶常法 | 合肥工业大学汽车与交通工程学院, 合肥,230002 | | 张志阳 | 中国科学技术大学火灾科学国家重点实验室,合肥,230026 | | 宗若雯 | 中国科学技术大学火灾科学国家重点实验室,合肥,230026；中国科学技术大学苏州研究院苏州城市公共安全重点实验室, 苏州,215123 |
|
| 中文关键词: 油罐火 火焰倾角 风速 罐顶开口尺寸 液位深度 |
| 英文关键词:Oil tank fire Flame tilt angle Air flow speed Tank opening size Lip height |
| 摘要点击次数: 187 |
| 全文下载次数: 1107 |
| 中文摘要: |
| 以柴油为研究对象, 搭建了小尺度油罐火实验台, 采用理论分析与实验研究相结合的方法, 开展了有风条件下不同液位深度和罐顶开口宽度的小尺度油罐火火焰倾角的实验研究。 结果表明, 火焰倾角随风速的增加先迅速增加, 然后趋于平稳。 在相同的罐顶开口宽度和风速条件下, 火焰倾角随着液位深度的增加呈现出减小的趋势。这是因为火焰微元在油罐开口处的速度随着液位深度的增加而增加, 风速对火焰倾角的影响显著减小。 当风速和液位深度一定时, 质量损失速率随罐顶开口宽度的增大而增大, 火焰倾角随着罐顶开口宽度的增大逐渐减小。 |
| 英文摘要: |
| In this study, experiment platforms of small-scaled oil tank fire under wind conditions have been built with diesel as the fuel. This paper investigates the evolution characteristics of small-scaled flame tilt angle of diesel oil tank fire under wind condition with different tank opening widths and lip heights by experiment study and theoretical analysis. Experiment results show that the ?ame tilt angle increases with the wind speed first rapidly and then very slowly. With the same tank opening width and wind speed, the flame tilt angle decreases with the increase of the lip height. That is because that the velocity at the opening of the tank increases with the increase of the lip height, and the effect of air flow on the flame tilt angle decreases significantly. The mass loss rate increases with the tank opening width, and the tilt angle increases with the decreasing tank opening width under the same lip height and air flow speed. |
| 关闭 |
|
|
|
