【摘要】 采用smooke35步机理和条件矩封闭模型,数值方法应用二阶精度中心差分和刚性系统算法器VODE,对一甲烷对撞火焰结构进行了模拟,获得了非预混火焰中反应物、主产物和微量组分随混合分数的变化关系。结果表明:该方法具有较好预测效果,具有较大潜力。更多还原

【Abstract】 With 35-steps mechanism by Smooke, the temperature and the concentration profiles of reactants, main products and minor species along with mixture fraction for CH4/O2/N2 opposed-jet flames are simulated by using conditional moment closure (CMC) method. The equation of CMC is discretised using a second-order central difference and it is solved by a variable-coefficient ODE solver called VODE. The results show that the method is effective, practical and promising one.更多还原