耦合详细反应动力学机理的碳氢燃料预混火焰结构数值预测

Numerical Predictions of Premixed Flame Structure for Hydrocarbon/Air Coupling Detailed Chemical Kinetics

理论研究碳氢燃料、空气预混气流动燃烧过程数值计算方法 以碳氢类燃料中具有代表性的柴油为例 ,采用其最新研究的化学反应动力学机理 (包含 32 7个基元反应 ,涉及 71种组分 ) ,使用美国SANDIA国家实验室开发的CHEMKIN系列软件、PREMIX程序和LAWRENCE国家实验室开发的解刚性反应系统算法器 ,模拟了不同工况下预混火焰中温度、反应物、主产物和自由基浓度随火焰高度的变化关系 。

Numerical scheme for reactive flow of premixed hydrocarbon/air is studied in this work. The new kinetic schemes used for diesel oil which is one of the typical hydrocarbons consist of 71 species in 327 reactions. The variations of concentrations of reactants, main products and radicals as well as temperature variation in the flame with two conditions are predicted by using the code named CHEMKIN and PREMIX as well as stiff solver developed by Sandia National Laboratory and Lawrence National Laboratory in order to provide guidance for reaction design.