面向发动机燃料的着火、火焰传播及反应动力学研究

本项目紧密结合“面向发动机的湍流燃烧基础研究”重大研究计划中的核心基础科学问题，针对发动机实际燃料开展着火、火焰传播的理论与实验研究，开展高参数和宽工况条件下发动机燃料，发动机模拟燃料以及发动机模拟燃料主要组分的层流燃烧速率和着火延迟期测量与表征，基于着火延迟期和层流燃烧速率构建发动机模拟燃料主要组分、发动机模拟燃料的反应动力学机理并用于预测和验证实际燃料的着火特性与火焰传播特性。研究火焰不稳定性机理、层流湍流转捩过程及其影响因素。通过研究阐明我国发动机燃料的着火与火焰传播特性，构建发动机模拟燃料主要组分以及针对我国发动机燃料的模拟燃料的反应动力学机理。研究对阐明发动机中的燃烧基础科学问题具有重要的学术价值，对认识我国实际发动机燃料燃烧规律具有指导性，对发动机燃烧优化与控制具有重要的指导意义。

This project closely targets the core basic issues of the Significant Research Project “Engine Related Turbulent Combustion Research” and conducts the study on ignition and flame propagation of engine fuels both theoretically and experimentally.The project will do the measurement and interpretation of engine fuels, engine fuel surrogates and main components of fuel surrogates under high parameters and wide operation conditions. The chemical kinetics of fuel surrogates and the main components of fuel surrogates will be proposed and validated on the basis of the measured ignition delay times and laminar flame speeds and will be applied to the prediction of the ignition and flame propagation of engine fuels.Flame instability and the transition from laminar flame to turbulent flame will also be studied.The study will charify the ignition and flame propagationcharacteristics of engine fuels, construce chemical kinetics of main components of fuel surrogates and fuel surrogates of Chinese domestic engine fuels. The study has academic value on the interpretation of combustion fundamental issues in engines, has guidance on understanding of combustion characteristics of domestic engine fuels as well as on engine combustion optimization and control.