化工学报2016，Vol.67Issue(7)：2724-2731,8.DOI:10.11949/j.issn.0438-1157.20160119
微喷管氢气非预混射流火焰燃烧特性
Combustion characteristic of hydrogen non-premixed micro-jet flames
摘要
Abstract
Non-premixed hydrogen micro-jet flames in co-flow airs were studied by numerical computations with a detailed chemical reaction mechanism. The results of numerical computations agreed reasonably well with the counterparts of the experiments. The results showed that the computed maximum flame temperature decreased with decreasing fuel injection velocity for a fixed micro tube. When the fuel injection velocity was close to the minimum flow velocity sustaining a flame, the computed maximum flame temperature decreased sharply with decreasing fuel velocity. The wall materials had an influence on flame structures at a low fuel velocity. The lower the thermal conductivity of materials, the higher the wall temperature near the nozzle exit. The maximum flame temperature on the axis was relative higher. However, the effect of thermal conductivity on the quenching velocity of flame was not remarkable.关键词
微喷管非预混火焰/氢/热传导/熄灭极限/数值模拟Key words
non-premixed micro-jet-flame/hydrogen/heat conduction/quenching limit/numerical simulation分类
能源科技引用本文复制引用
张京,李星,杨浩林,蒋利桥,汪小憨,赵黛青..微喷管氢气非预混射流火焰燃烧特性[J].化工学报,2016,67(7):2724-2731,8.基金项目
国家自然科学基金项目（51336010）；国家重点基础研究发展计划项目（2014CB239600）；广东省国际合作项目（2014A050503054）。@@@@supported by the National Natural Science Foundation of China (51336010), the National Basic Research Program of China (2014CB239600) and the International Cooperation Program of Guangdong, China (2014A050503054) （51336010）
