电场作用下的液体乙醇微尺度层流扩散燃烧  

Micro Scale Laminar Flow Diffusion Combustion of Liquid Ethanol Under the Influence of Electric Field

作　　者：徐涛[1] 高学农[1] 甘云华[2] 杨泽亮[2] 方玉堂[1] 张正国[1] 

机构地区：[1]华南理工大学传热强化与过程节能教育部重点实验室,广州510640 [2]华南理工大学电力学院能源高效清洁利用广东普省通高校重点实验室,广州510640

出　　处：《燃烧科学与技术》2011年第5期401-406,共6页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(50806022);中央高校基本科研业务费专项资金资助项目(2009ZM0031);能源高效清洁利用广东省普通高校重点实验室(华东理工大学)资助项目(KLB10004)

摘　　要：采用实验和数值模拟方法研究了电场作用下液体乙醇层流扩散微燃烧的火焰结构、火焰无量纲高度和宽度以及Re之间的关系.结果表明,实验拍摄火焰结构图像与数值模拟高温区结构相似,正向电场火焰结构尺寸较反向电场高;H/d与Re呈线性关系,正向电场的H/d随Re增加幅度较反向电场快;W/d随Re先是线性增加,后期变化幅度较小;火焰中心温度总体趋势是随Re的增加而增加,正向电场火焰中心温度较反向电场高;火焰无量纲高度和宽度以及火焰中心温度的数值模拟值与实验计算值吻合良好.The relationship between flame structure of liquid ethanol laminar flow diffusion micro combustion under the influence of electric field, flame dimensionless height and width, and Re number was studied through experiment and numerical simulation. The results showed that flame structure shot in experiment was similar to that of the high temperature region obtained by numerical simulation. The flame structure size of the positive electric field was larger than that of the reverse electric filed. H/d was in a linear relationship with Re, and the positive electric field H/d increased faster with Re than the reverse electric field H/d. W/d increased linearly with Re firstly, and at the later stage it varied slightly. Generally, flame core temperature increased with the increase of Re. The flame core temperature of the positive electric field was higher than that of the reverse electric field. The numerical simulation values of flame dimensionless height and width and flame core temperature were in good agreement with the experimental calculated values.

关 键 词：微尺度 火焰结构 数值模拟 

分 类 号：TQ171[化学工程—玻璃工业]