| 高压天然气管道喷射火热辐射计算 |
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| 引用本文： | 胡美娟,马晓荷,伍奕,张庆明,杨明,张晓伟,尚臣. 高压天然气管道喷射火热辐射计算[J]. 北京理工大学学报, 2018, 38(S2): 22-24,28 |
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| 作者姓名： | 胡美娟 马晓荷 伍奕 张庆明 杨明 张晓伟 尚臣 |
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| 作者单位： | 中国石油集团 石油管工程技术研究院石油管材及装备材料服役行为与结构安全国家重点实验室, 陕西, 西安 710077,北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081,中国石油西部管道公司, 新疆, 乌鲁木齐 830013,北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081,中国石油西部管道公司, 新疆, 乌鲁木齐 830013,北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081,中国石油西部管道公司, 新疆, 乌鲁木齐 830013 |
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| 基金项目： | 中国石油天然气股份有限公司科学研究与技术开发项目 |
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| 摘 要： | 天然气燃爆喷射火事故可能造成人员建筑严重损害，为研究大型天然气喷射火燃爆特性，使用CFD计算软件，对质量流量在5 kg/s以上，压力分别为12 MPa与6 MPa，泄漏孔径在25 mm、50 mm与100 mm时的高压天然气喷射火进行仿真，得到这六种工况下喷射火火焰尺寸、温度分布和近地热辐射强度分布曲线，并得到喷射火长度与宽度和泄漏孔直径的线性变化关系.与喷射火常用的Thornton模型对比，仿真结果计算的火焰长度基本符合，热辐射结果在泄漏中心30 m以外基本相近，两种方法都可用于估算远距离喷射火热辐射强度，为天然气设施安全设计提供参考.
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| 关 键 词： | 天然气 喷射火 热辐射 Thornton模型 |
| 收稿时间： | 2018-12-01 |
Numerical Modelling of High Pressure Natural Gas Jet Fires |
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| HU Mei-juan,MA Xiao-he,Wu Yi,ZHANG Qing-ming,YANG Ming,ZHANG Xiao-wei and SHANG Chen. Numerical Modelling of High Pressure Natural Gas Jet Fires[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2018, 38(S2): 22-24,28 |
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| Authors: | HU Mei-juan MA Xiao-he Wu Yi ZHANG Qing-ming YANG Ming ZHANG Xiao-wei SHANG Chen |
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| Affiliation: | CNPC Tubular Goods Research Institute, State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, Xi''an, Shaanxi 710077 China,State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China,Petrochina West Pipeline Company, Urumqi, Xinjiang 830013, China,State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China,Petrochina West Pipeline Company, Urumqi, Xinjiang 830013, China,State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China and Petrochina West Pipeline Company, Urumqi, Xinjiang 830013, China |
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| Abstract: | Natural gas jet fire can cause destructive damages by the heat it radiates to the surrounding space. With CFD code, numerical simulations were carried to analyze geometry and heat flux properties of natural gas jet fires. Six cases with mass flow rate up to 163 kg/s, pressure up to 12 MPa, and with outlet diameter up to 100 mm were conducted, and compared with Thornton model results. Flame sizes are obtained to show a linear relationship between outlet diameter and both flame length and width. The calculated results are in a nice fit with the Thornton model results, while heat flux distributions differ when concerning areas are near the outlet. The far field heat flux distributions perform generally the same with engineeringly acceptable tolerance, confirming both methods can be considered in natural gas facility safety designs. |
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| Keywords: | natural gas jet fire heat flux Thornton model |
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