半受限空间油气无约束泄爆外场特性研究

发布时间：2018-03-26 02:29

本文选题：油气　切入点：半受限空间　出处：《中国安全科学学报》2017年08期

【摘要】：为研究半受限空间油气无约束泄爆外场特性,基于爆炸力学、可燃气体爆炸超压评估法则和化学动力学等理论,建立评估外场爆燃超压的无量纲比例距离模型;采用模拟试验的研究方法,测量外场爆燃超压并记录火焰形态变化过程;基于此,分析外场超压与火焰形态变化规律,提出外场超压-比例距离变化半经验公式。结果表明:外场横纵方向上最大爆燃超压与比例距离成负指数函数关系;流场与火焰间的正反馈作用决定了火焰传播过程中的形态变化。
[Abstract]:A dimensionless proportional distance model is established to evaluate the explosion overpressure in semi-confined space based on the theory of explosion mechanics, explosion overpressure evaluation of combustible gas and chemical kinetics. In this paper, the external deflagration overpressure is measured and the process of flame morphology change is recorded by using the method of simulation test, based on which, the variation law of external field overpressure and flame morphology is analyzed. The semi-empirical formula of overpressure-proportional distance variation in external field is presented. The results show that the maximum deflagration overpressure in the transverse and longitudinal direction of the external field has a negative exponential function with the proportional distance. The positive feedback between the flow field and the flame determines the shape change during the flame propagation.
【作者单位】：中国人民解放军后勤工程学院军事供油工程系;
【基金】：国家自然科学基金资助(51276195) 重庆市研究生科研创新项目(CYS15235)
【分类号】：TE65;TQ086

【相似文献】