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《Explosion and Shock Waves》 2010-01
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Three-dimensional numerical simulation of gas cloud explosion induced by well blowout

AI Zhi-jiu1,WU Guang-wu2,WANG Qi-hua3,LEI Wen-zhang1,3,CHEN Gao-song3(1.Southwest Petroleum University,Chengdu 610500,Sichuan,China;2.China National Offshore Oil Corporation Research Institute,Beijing 100027,China;3.Research Institute of Safety and Environment Technology,China National Petroleum Corporation,Beijing 100083,China)  
Based on the K-ε model and the improved eddy break-up (EBU) model,a new theoretical model was established to describe the methane jet diffusion induced by well blowout and the methane-air cloud explosion. And the methane-air cloud diffusion was considered in the new model. By using the new model,the SIMPLE algorithm was adopted to solve differential equations. The formation process of the methane-air cloud was numerically simulated to investigate the effects of different ignitions on the mixture cloud explosion. The results show that the ignition locations and the gas cloud concentrations at the ignition points can affect markedly the gas cloud explosion. The nearer the ignition point away from the gas cloud center and the higher the gas concentration at the ignition point,the more intensely the gas cloud explodes.
【Fund】: 中国石油集团公司2006年重点项目(06B7101)~~
【CateGory Index】: O381
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