开缝钝体燃烧器回流加热链着火分析  

Circle Heating Chain Analysis on Fire of Slitting Bluff-Body Burner

作　　者：靳世平[1] 钱壬章[1] 

机构地区：[1]华中科技大学能源与动力工程学院,武汉430074

出　　处：《燃烧科学与技术》2003年第3期244-246,共3页Journal of Combustion Science and Technology

摘　　要：用回流加热链着火分析法,分析比较了钝体燃烧器和开缝钝体燃烧器不同的稳焰机理.通过建立热平衡方程,求出流体混合温度.结果表明,只要小股中缝流能够着火,开缝钝体回流流体混合温度就会高于钝体回流流体混合温度,从而增强了稳焰能力.燃烧试验结果与分析结果一致.By the method of circle heating chain analysis, the different mechanism of flame stability between bluff-body burner and slitting bluff-body burner were compared. The mixing temperature of the flow is gained from the heat balance equation. It is proved that if the small amount of fuel-air flow is fired, the mixing temperature of circle flow behind the slitting bluff-body must be higher than that behind bluff-body, thus the flame stability becomes stronger. Combustion test is in correspondence with the analysis.

关 键 词：开缝钝体燃烧器 回流链 混合温度 稳焰分析 

分 类 号：TK16[动力工程及工程热物理—热能工程]