摘要
基于反应路径分析法,建立了一个适合三维数值模拟软件耦合生物柴油反应机理的简化机理。该简化机理由68个组分和113个基元反应组成。通过与文献提出的机理进行对比,结果表明该简化机理具有较好的精度。利用CFD软件FLUENT建立柴油机三维模型,将简化机理与EDC燃烧模型等耦合。计算结果显示,所建立的三维模型在CPU为I7-4790的处理器上计算耗时约为70 h,比文献提出的机理节省约170 h,且能较好地预测发动机的作功能力。
Based on the reaction path analysis method, a simplified mechanism of biodiesel was established which is suitable for coupling the 3D numerical simulation software. The simplified chemical kinetic mechanism includes 68 species and 113 elementary reactions. After comparing with the mechanism proposed in the literature, it can be concluded that the simplified mechanism has good precision. A three-dimensional numerical model of diesel engine was developed by coupling the simplified chemical kinetic mechanism and the EDC combustion model. When the processor model is I7-4790, calculation results show that the time consuming of using simplified mechanism is 70 hours, it saves about 170 hours compared to the original mechanism, and it can predict the power of the engine well.
出处
《小型内燃机与车辆技术》
2016年第3期56-59,共4页
Small Internal Combustion Engine and Vehicle Technique
关键词
生物柴油
反应路径分析法
简化机理
三维数值模拟
Biodiesel
Reaction path analysis method
Simplified mechanism
Three-dimensional simulation
