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Study on the thermal ignition of Gasoline-air Mixture in Underground Oil Depots based on Experiment and Numerical Simulation

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Journal of thermal Science 2010年第2期19卷 173-181页

作者： Ou Yihong Du Yang Jiang Xingsheng Wang dong Liang Jianjun Department of Petroleum Supply Engineering in Logistic Engineering University Chongqing 401311China Logistic Engineering University of PLA.

The study on the special phenomenon,occurrence process and control mechanism of gasoline-air mixture thermal ignition in underground oil depots is of important academic and applied value for enriching scientific theories of explosion safety,developing protective technology against fire and decreasing the number of fire *** this paper,the research on thermal ignition process of gasoline-air mixture in model underground oil depots tunnel has been carried out by using experiment and numerical simulation *** calculation result has been demonstrated by the experiment *** five stages of thermal ignition course,which are slow oxidation stage,rapid oxidation stage,fire stage,flameout stage and quench stage,have been firstly defined and accurately *** to the magnitude order of concentration,the species have been divided into six categories,which lay the foundation for explosion-proof design based on the role of different *** influence of space scale on thermal ignition in small-scale space has been found,and the mechanism for not easy to fire is that the wall reflection causes the reflux of fluids and changes the distribution of heat and mass,so that the progress of chemical reactions in the whole space are also *** novel mathematical model on the basis of unification chemical kinetics and thermodynamics established in this paper provides supplementary means for the analysis of process and mechanism of thermal ignition.

关键词： underground oil depots gasoline-air mixture thermal ignition experiment numerical simulation

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Theory and Applications of ignition with Variable Activation Energy

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Journal of thermal Science 1992年第3期1卷 208-212页

作者： G. C. Wake M. Sleeman X. D. Chen J. C. Jones Department of Mathematics Massey University Palmerston North New Zealand New Zealand Dairy Research Institute Milk Powders & Drying Section Palmerston North New Zealand School of Chemical Engineering and Industrial Chemistry University of New South Wales P.O. Box 1 Kensington NSW 2033 Australia

The determination of critical conditions for thermal ignition of combustible materials has been traditionally studied by the use of one overall reaction with bounded parameter values for the activation energy and other chemical constants, Significant errors can occur in the values of the threshold parameters for ignition when there are two (or more) simultaneous reactions present with distinct values of the chemical constants. Recent work with simultaneous parallel reactions showed the thresholds for ignition could be lowered in this case. In this paper, motivated by experimental results for forest litter and coal, it is shown that for sequential reactions (different values of parameters in different temperature ranges) that the threshold conditions are changed (safer for lower ambient temperatures and less safe for higher ambient temperatures). The mathematical analysis is summarised and a detailed analysis is given for the forest litter and crushed coal applications. The experimental results show that variable activation energy does occur and that this extension of the classical Frank-Kamenetskii theory is needed. Here the analysis is confined to the slab geometry only but the ideas developed can easily be extended to more general systems, including those involving mass transport, consumption, and phase changes.

关键词： thermal ignition variable activation energy.

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Cook-off Test and Its Numerical Simulation of Detonator Based on RDX

Cook-off Test and Its Numerical Simulation of Detonator Base...

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2004安全科学与技术国际会议

作者： ZHANG Rui1 FENG Changgen2 & CHEN Lang2 (1 State Key Laboratory of Applied Physics-Chemistry Shaanxi Applied Physics-chemistry Research Institute Xian 710061 Shaanxi China) (2 State Key Laboratory of Prevention and Control of Explosion Disasters Beijing Institute of Technology Beijing 100081 China)

In the present paper the cook-off test of a kind of detonator based on RDX explosive is carried out. The thermal safety of the explosive parts is discussed. The thermal response of the explosives is c

关键词： thermal ignition numerical simulation cook-off test explosive

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