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| 富氧环境下火箭煤油的火蔓延研究 |
| Research on flame spread of rocket kerosene in oxygen-enriched environment |
| 投稿时间：2025-04-10 修订日期：2025-10-15 |
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| DOI： |
| 基金项目:[NO.52076203]资助。 |
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| 中文关键词: 火蔓延 氧气环境 初始温度 全局模型 |
| 英文关键词:flame spread oxygen concentration initial temperature global model |
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| 中文摘要: |
| 本工作对火箭煤油从21% O2到100% O2环境中的的火焰蔓延特性进行了实验和理论研究。重点讨论了氧浓度对火焰蔓延过程和蔓延速度的影响,分析了不同火焰蔓延阶段的特征初始温度。结果表明：在不同氧浓度下,随着初始温度的升高,火焰的蔓延速度增大。40% O2和60% O2的火焰传播过程可分为4个阶段,而80% O2和100% O2的火焰传播过程只能观察到2个阶段。根据各阶段的特征初始温度和理论分析,建立了考虑初始温度和氧浓度影响的火焰蔓延速率全局模型。本研究为减轻过程工业中富氧火灾的威胁提供了基础数据和预测模型。 |
| 英文摘要: |
| The purpose of this work is to explore the effect of oxygen concentrations on the flame spread of rocket kerosene in specific locations with oxygen concentrations exceeding 21% due to possible oxygen leaks, such as rocket launch sites. The flame spread characteristics of rocket kerosene from 21% O2 (Air) to 100% O2 (pure oxygen) are experimentally and theoretically investigated. The effects of oxygen concentration on flame spread process and flame spread rate were discussed, and the characteristic initial temperature for different flame spread stages were analyzed. Results show that the flame spread rate increases with the increase of initial temperature for different oxygen concentrations. The flame spread process can be divided into four stages for 40% O2 and 60% O2, while only two stages can be observed for 80% O2 and 100% O2. Based on the characteristic initial temperatures for each stage and the theoretical analysis, a global model of flame spread rate is proposed considering the effect of initial temperature and oxygen concentration. This study provides basic data and predictive model to mitigate the threat posed by oxygen-enriched fires in the process industry. |
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