均质充量压缩燃烧数值模拟的研究动态

与传统的汽油机和柴油机相比,均质充量压缩燃烧(HCCI)方式由于其高热效率和低排放等突出的优越性已成为国际上的研究热点,数学模拟在其中发挥着日益重要的作用.因此,对近年来HCCI燃烧数值模拟研究的进展按单区模型、多区模型和多维CFD模型分别做了全面评述和讨论.前二者在HCCI总体燃烧特性预测与分析方面已取得了显著的成绩;而CFD与详细化学动力学耦合模型由于计算机资源的限制,目前尚处于发展初期.最后,对该领域存在的问题进行了讨论,对今后重点研究方向提出了建议.

Research on numerical simulation of homogeneous charge compression ignition (HCCI) combustion

Comparing to the traditional SI and CI engines,Homogenous Charge Compression Ignition(HCCI) has great advantages such as high heat efficiency and low emission.It has become an international research focus in recent years,in which the mathematical model and simulation technology plays an important role.In this paper,the research work of HCCI combustion model and simulation are discussed on single zone,multi-zone and 3D CFD models.The former two of the HCCI combustion characteristics of the overall forecast and analysis has made notable achievements;and CFD with detailed chemical kinetics coupling model computer resource constraints,are still at the early stages of development.Finally the existing problems and difficulties in HCCI combustion modeling and simulation are pointed out and the focus of future research directions are suggested.