可再生能源2012，Vol.30Issue(10)：89-92,4.
甲烷/空气混合物在微小型钝体燃烧器中的燃烧特性
Combustion characteristics of methane/air mixture in micro-scale combustors with different bluff-bodies
摘要
Abstract
Two kinds of combustors with a height less than the quenching distance were designed and the combustion characteristics were studied for stable combustion. The gap distance of the combustion chamber is 2 mm, and the length is 20 mm.An equilateral triangular bluff-body with a side length 1.0 mm or a "V" bluff-body of the same size is fitted near the entrance of the combustion chamber.There are two preheating channels on the upper and lower sides of the combustion chamber. Numerical simulation on methane/air premixed combustion in these combustors was performed and both velocity limits and concentration limits of the systems were decided.Compared with the combustor with a triangle bluff-body,the stable combustion ranges of the combustor with a "V" bluff-body were enlarged.The combustion efficiencies all stayed above 99%.But when the inlet mixture velocity was too small and equivalence ratios were relatively high, flashback would happen.关键词
微尺度燃烧/甲烷/空气预混物/三角形钝体/"V"形钝体/稳燃范围/回流区Key words
micro-combustion/methane/air pre-mixture/triangle bluff-body/"V" shape bluff-body/stable combustion range/recirculation zone分类
能源科技引用本文复制引用
沈文庆,程哲,李长甫,方韬,范爱武,刘伟..甲烷/空气混合物在微小型钝体燃烧器中的燃烧特性[J].可再生能源,2012,30(10):89-92,4.基金项目
国家自然科学基金(51076054,51276073) （51076054,51276073）
重庆大学低品位能源利用技术及系统教育部重点实验室开放课题资助项目. （）
