含水乙醇汽油简化化学反应动力学模型

Reduced Chemical Reaction Kinetic Model of Hydrous Ethanolgasoline Fuel

摘要:

引入“半解耦”方法，以H2/CO/C1小分子机理为“内核”，耦合乙醇氧化骨架机理和汽油表征燃料的甲苯参比燃料(TRF)机理，构建乙醇汽油混合燃料的简化化学反应动力学模型.利用CHEMKIN软件进行数值模拟，通过相关实验对该模型进行验证.进一步分析水的影响，构建了含水乙醇汽油简化化学反应动力学模型.与乙醇汽油着火特性实验数据进行对比，验证了该简化机理的合理性.

关键词:汽油; 含水乙醇; 化学反应机理; 简化模型

Abstract:

In this paper, the idea of ‘semidecoupling’ is introduced to construct an ethanolgasoline chemical reaction model, which uses the small molecule mechanism of H2/CO/C1 as the ‘core’ with coupling the ethanol skeleton oxidation mechanism and the gasoline toluene reference fuel(TRF) mechanism. By comparing with experimental results available in published literature, the numerical simulation results calculated by CHEMIKIN software can accurately reflect the combustion characteristics of ethanolgasoline fuel. Furthermore, based on the sensitivity analysis of H2O, a hydrous ethanolgasoline reduced chemical kinetic model is established through integrating the chemical reactions of H2O. And the reduced model is verified by the experimental results of ethanolgasoline fuel ignition characteristics.

Key words:gasoline; hydrous ethanol; chemical kinetic mechanism; reduced model