A new phenomenological model of gas explosion based on characteristics of flame surface |
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| Institution: | 1. Chemical Engineering Department, Faculty of Engineering, University of Malaya, 50603 UM Kuala Lumpur, Malaysia;2. Faculty of Chemical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Malaysia;1. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China;2. State Key Lab of Gas Geology and Control-Cultivation Base, Henan Polytechnic University, Jiaozuo, Henan, 454003, China;3. Northwest Institute of Nuclear Technology, Xi''an, Shanxi, 710024, China;1. School of Mechanical & Automotive Engineering, Kingston University London, SW15 3DW, UK;2. Lehrstuhl für Thermodynamik, Technische Universität München, Garching, 85748, Germany;3. Warwick FIRE, School of Engineering, University of Warwick, Coventry, CV4 7AL, UK;1. Institute of Nuclear and Energy Technologies, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany;2. Engineering and Scientific Software Inc., Santa Fe, NM 87505, USA;1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;2. Chemical Engineering College, Beijing Institute of Petrochemical Technology, Beijing 102617, China |
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| Abstract: | This paper presents a new model of explosion propagation in a closed vessel. The foundation of the formulation is a sub-model of turbulent burning velocity based on the assumption that the burning velocity of a turbulent wrinkled flame can be determined from the flame surface. In addition, model development includes simple sub-models of heat transfer and free convection. In order to verify the physics, the model was utilized to simulate the explosion of a methane–air mixture in two different test vessels. The results obtained by use of this new model were compared with results obtained by use of the classical model. While the simulations showed that both are accurate, the new model presented in this paper (called “flame surface model” for simplicity) is more flexible and can easily accommodate sub-models of different phenomena that can play an important role in fuel–air explosions. |
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