球接管容器气体爆炸尺寸效应的试验研究与数值分析
发布时间：2018-11-07 15:53
【摘要】：为了解尺寸对球形容器连接管道甲烷-空气混合物爆炸的影响规律,利用Fluent软件,采用κ-ε湍流模型、涡耗散模型(简称EDC模型)、壁面热耗散、热辐射模型及SIMPLE算法,建立了球形容器连接管道内甲烷-空气混合物爆炸的数值模型,对容器与管道内甲烷-空气预混气体爆炸的尺寸效应进行了数值模拟。结果表明:随管道内径增大,球形容器内最大爆炸压力逐渐增大,管道末端最大爆炸压力变化无明显规律;而随管道长度增加,球形容器内最大爆炸压力逐渐减小;改变管道内径,较大体积球形容器内最大爆炸压力均大于较小体积球形容器内最大爆炸压力,最大爆炸压力上升速率的规律则相反,容器体积对管道末端最大爆炸压力的影响无明显规律。
[Abstract]:In order to understand the effect of dimension on the explosion of methane-air mixture in spherical vessel connected pipes, the 魏-蔚 turbulence model, vortex dissipation model (EDC model), wall heat dissipation, thermal radiation model and SIMPLE algorithm were used by Fluent software. A numerical model of methane air mixture explosion in a spherical vessel connecting pipe is established. The size effect of methane air premixed gas explosion in a vessel and pipeline is numerically simulated. The results show that the maximum explosion pressure in the spherical vessel increases gradually with the increase of the inner diameter of the pipe, but the maximum explosion pressure in the spherical vessel decreases with the increase of the length of the pipe. The maximum explosion pressure in larger spherical vessel is larger than that in smaller spherical vessel, and the law of maximum explosion pressure rise rate is opposite. The effect of vessel volume on the maximum explosion pressure at the end of the pipe is irregular.
【作者单位】： 南京工业大学安全科学与工程学院江苏省危险化学品本质安全与控制技术重点实验室;
【基金】：国家自然科学基金项目(51376088)
【分类号】：O643.221;TE65
本文编号：2316829
[Abstract]:In order to understand the effect of dimension on the explosion of methane-air mixture in spherical vessel connected pipes, the 魏-蔚 turbulence model, vortex dissipation model (EDC model), wall heat dissipation, thermal radiation model and SIMPLE algorithm were used by Fluent software. A numerical model of methane air mixture explosion in a spherical vessel connecting pipe is established. The size effect of methane air premixed gas explosion in a vessel and pipeline is numerically simulated. The results show that the maximum explosion pressure in the spherical vessel increases gradually with the increase of the inner diameter of the pipe, but the maximum explosion pressure in the spherical vessel decreases with the increase of the length of the pipe. The maximum explosion pressure in larger spherical vessel is larger than that in smaller spherical vessel, and the law of maximum explosion pressure rise rate is opposite. The effect of vessel volume on the maximum explosion pressure at the end of the pipe is irregular.
【作者单位】： 南京工业大学安全科学与工程学院江苏省危险化学品本质安全与控制技术重点实验室;
【基金】：国家自然科学基金项目(51376088)
【分类号】：O643.221;TE65
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