Development and validation of a reduced chemical kinetic model for dimethyl ether combustion
Development and validation of a reduced chemical kinetic model for dimethyl ether combustion
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DOI：
10.1016/j.fuel.2015.07.066
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发表时间：
2015-11
期刊：
影响因子：
7.4
通讯作者：
Lun Pan;S. Kokjohn;Zuo-hua Huang
中科院分区：
文献类型：
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作者：
Lun Pan;S. Kokjohn;Zuo-hua Huang
提出了一种新的、减少内燃机中二甲醚燃烧反应的机制。新机制基于适用于低温到高温范围的详细 DME 机制。简化模型由 29 个物种和 66 个反应组成，包含详细的 H2/CO 机理和简化的 C1-C2 化学。简化的机构继承了详细机构的主要反应路径，这确保了其在耦合到 CFD 模拟时的预测能力。将简化机构的性能与详细机构的仿真结果、激波管和快速压缩机的点火延迟时间以及 DME 发动机燃烧数据进行了比较。总体而言，简化的机制显示了燃烧系统设计应用所需的精度和计算效率之间的良好平衡。
A new, reduced reaction mechanism for DME combustion in internal combustion engines is proposed. The new mechanism is based on a detailed DME mechanism suitable for low to high temperature ranges. The reduced model consists of 29 species and 66 reactions and contains a detailed H2/CO mechanism and reduced C1–C2 chemistry. The reduced mechanism inherits the major reaction pathways of the detailed mechanism, which ensures its predictive capability when coupled into CFD simulations. The performance of the reduced mechanism was compared to simulation results of the detailed mechanism, ignition delay times from a shock tube and a rapid compression machine, and DME engine combustion data. Overall, the reduced mechanism shows a good balance between accuracy and computational efficiency necessary for use in combustion system design applications.