氢燃料特性及氢微混火焰模式分析  

Characteristics of Hydrogen Fuel and Flame Mode Analysis for Micromix Hydrogen Flame

作　　者：刘海清 张林瑶 邢畅[1] 刘栗[1] 邱朋华[1] LIU Haiqing;ZHANG Linyao;XING Chang;LIU Li;QIU Penghua(School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,Heilongjiang Province,China)

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江省哈尔滨市150001

出　　处：《中国电机工程学报》2025年第5期1791-1800,I0014,共11页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家自然科学基金项目(青年科学基金)(52206138);国家科技重大专项项目(J2019-III-0018-0062)。

摘　　要：氢气是未来发电领域最具前景的清洁燃料之一,在燃气轮机发电领域有广泛的应用。针对氢气的抗熄火特性以及微混氢气燃烧的内在流动与化学反应的尺度关系还有待补充。该文基于Cantera平台采用对冲火焰模型,研究不同当量比和预热温度下氢气的抗熄火特性,利用无量纲Da数(Damköhler数)和Ka数(Karlovitz数)结合火焰模式图评估微混氢火焰流动和化学反应尺度的相对关系。结果表明:常温常压下,氢气的抗熄火特性约为甲烷的10倍,且随预热温度增加,抗熄火特性逐渐增强;微混氢气燃烧受湍流和优势扩散双重影响,增强燃料和氧化剂输运过程。研究氢燃料特性和氢微混火焰的火焰模式可为湍流微混燃烧技术的发展以及湍流-化学反应燃烧模型的建立提供关键信息。Hydrogen is one of the most promising clean fuels in the field of future power generation,with widespread applications in gas turbine power generation.Further investigation is needed to understand the flame extinction characteristics of hydrogen and the scale relationship between turbulent flow and chemical reactions in micromix hydrogen combustion.In this study,a counterflow flame model is employed within the Cantera platform to investigate the flame extinction characteristics of hydrogen at various equivalence ratios and temperatures.The relative scale relationship of flow and chemical reactions in micromix hydrogen flames is assessed using dimensionless Damköhler(Da)and Karlovitz(Ka)numbers in conjunction with flame regime diagrams.The results indicate that at standard temperature and pressure,hydrogen exhibits flame extinction characteristics approximately ten times greater than methane.Furthermore,as the temperature increases,the flame extinction characteristics of hydrogen progressively strengthen.The micromix hydrogen combustion is influenced by both turbulence and dominant diffusion,enhancing the transport of fuel and oxidizer.Investigating the characteristics of hydrogen fuel and flame regimes in micromix hydrogen combustion provides crucial insights for the development of turbulent micromix combustion technology and the establishment of turbulent-chemical reaction combustion models.

关 键 词：氢气 微混燃烧 熄火拉伸率 火焰模式图 敏感性系数 

分 类 号：TK16[动力工程及工程热物理—热能工程]