微燃烧器气体混合特性及燃烧性能研究  

Research of gas mixing characteristics and combustion performance of micro burner

作　　者：龙鹏[1] 毕明华 LONG Peng;BI Ming-hua

机构地区：[1]桂林航天工业学院能源与建筑环境学院,广西桂林541004

出　　处：《节能》2020年第7期64-66,共3页Energy Conservation

基　　金：广西高校中青年教师基础能力提升项目(项目编号:KY2016YB533)。

摘　　要：关于微尺度燃烧的研究主要集中在燃烧器结构、环境因素、燃料入口参数等对火焰传播状态和稳定的影响。在预混燃烧研究过程中,一般默认燃料和助燃剂已经混合均匀好,少有研究不同进气方式对燃料和助燃剂混合效率以及燃烧特性的影响。通过对不同入射角度微燃烧器内气体混合及燃烧情况开展数值仿真研究,发现冷态时入射角度为45°时气流冲击较小,混合效果最佳。燃烧着火位置随夹角增大而逐渐后移,入口段周围,夹角越小,温升越快。Previous studies on micro-scale combustion have focused on the effects of burner structure, environmental factors, fuel inlet parameters, etc. on flame propagation status and stability. In pre-mixed combustion studies, the default fuels and accelerants are generally well mixed, and few studies examined the effects of different air intake methods on fuel and accelerant mixing efficiency and combustion characteristics. In this paper, numerical simulation of gas mixing and combustion in a micro burner with different incidence angles was carried out, and it was found that in the cold state, the airflow impact was smaller when the incidence angle was 45°, and the mixing effect was best. Burning fire position with increasing angle and gradually move back, around the entrance section, the smaller the angle is, the faster the temperature rises.

关 键 词：微燃烧器 混合特性 燃烧 

分 类 号：TK16[动力工程及工程热物理—热能工程]