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中文摘要：
采用N-S方程添加体积力源项的方法,使用FLUENT来模拟匀强电场对甲烷-空气球形传播火焰的拉伸影响,计算了过量空气系数1.6,体积力分别为12300 N/cm3、30750 N/cm3、123000 N/cm3情况下的火焰拉伸情况。结果表明,体积力选取较小值时数值结果与实验结果较为近似,偏大时则结果差别较大,通过对数值结果的分析发现,火焰锋面粒子迁移导致的浓度分布不均和涡流是导致球形传播火焰发生形变的主要原因。
英文摘要：
With the method that adding volume force source term to navier-stokes equation,we use FLUENT to simulate the stretch effect on methane-air spherically expanding flame by uniform electric field,and calculate the excess air coefficient of 1.6,volume force of 12300 N/cm3,30750 N/cm3,123000 N/cm3 flame stretch.The results show that to a small volume force,numerical results are consistent with experimental results.To a large volume force,the difference is big.By analysing the numerical results,we found that the concentration distribution of particles caused by particles transfer on flame surface and eddy should be the major cause of flame deformation.
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