实际发动机燃料的高压喷射湍流燃烧实验与机理研究

本项目紧扣“面向发动机的湍流燃烧基础研究”重大研究计划指南中的第二个科学问题——受限空间内复杂湍流和燃烧的相互作用，以实际发动机燃料（甲烷、氢气、汽油和航空煤油）为研究对象，利用西安交通大学层流/湍流燃烧实验平台结合高速摄像纹影测试技术，通过实验测量和理论分析，开展先进发动机研发过程中所急需的高压燃烧化学反应动力学、湍流燃烧实验数据和湍流与化学反应的相互作用机理的研究，构建高温高压湍流燃烧模型。本研究将填补高压条件下实际发动机燃料的层流/湍流火焰速率实验数据的空白，阐明不同初始参数对湍流燃烧火焰动力学的影响机理，对深层次理解高压下湍流与燃烧化学反应的耦合作用和高压火焰稳定性有重要理论价值，为先进发动机的设计和研发提供重要理论支撑，具有很强的基础性和前沿性。研究工作将促进我国湍流燃烧和发动机基础燃烧研究水平的整体提升，支撑国家在内燃机、燃气轮机和航空发动机领域的科技进步与创新。

This project focuses on the interaction of complex turbulent flow and combustion in the closed space, which is the second scientific problem of the major research plan "Fundamental study on the turbulent combustion for engines". The practical engine fuels (methane, hydrogen, gasoline and kerosene) are selected as the objective fuels. The experimental study on chemical kinetics, laminar/turbulent flame speed, and turbulence-chemistry interaction of turbulent flames at high pressures will be conducted by using shock tube, laminar/turbulent combustion vessel combined with high speed schlieren measurement technology. Through the experimental measurement and theoretical analysis, the high pressure turbulent combustion model will be developed based on the experimental results. This research will provide the laminar flame speeds and turbulent flame speeds of practical engine fuels at high pressures, illustrate the pressure effect on the laminar/turbulent flame speed and turbulent flame dynamics. This will help to deeply understand the interaction of turbulence and combustion reaction at high pressures and flame stabilities. This study has a strong academic value to provide the experimental and theoretical guidance for the design and development of advanced engines. This research will promote the turbulent combustion and engine combustion research level of China, and support the technology progress and innovation in the field of internal combustion engine, gas turbine and aero-engine.