Single-step chemistry model and transport coefficient model for hydrogen combustion  

作　　者：WEN Jennifer WANG ChangJian LU ShouXiang GUO Jin 

机构地区：[1]Center for Fire and Explosion Studies,Kingston University,London SW15 3DW,UK [2]State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230027, China

出　　处：《Science China(Technological Sciences)》2012年第8期2163-2168,共6页中国科学（技术科学英文版）

基　　金：supported by EU IIF-FP7 Project (Grant No. 909658);the National Natural Science Foundation of China (Grant No.50806071);the Fundamental Research Funds for the Central Universities of China

摘　　要：To satisfy the needs of large-scale hydrogen combustion and explosion simulation,a method is presented to establish single-step chemistry model and transport model for fuel-air mixture.If the reaction formula for hydrogen-air mixture is H2+0.5O2→H2O,the reaction rate model is ?? =1.13×10?5[H2][O2]exp(?46.37T0/T) mol(cm3 s)?1,and the transport coefficient model is ?=K/CP=ρD=7.0×10?5T 0.7 g(cm s)?1.By using current models and the reference model to simulate steady Zeldovich-von Neumann-Doering(ZND) wave and free-propagating laminar flame,it is found that the results are well agreeable.Additionally,deflagration-to-detonation transition in an obstructed channel was also simulated.The numerical results are also well consistent with the experimental results.These provide a reasonable proof for current method and new models.

关 键 词：hydrogen combustion singe-step chemistry model transport coefficient model 

分 类 号：O643.2[理学—物理化学]