径向分层旋流燃烧器燃烧可视化研究

Visualization Study of Coal Combustion in a Radially Stratified Swirl-type Burner

通过所开发的图像采集与处理系统 ,对一台径向分层旋流燃烧器的煤气火焰进行了可视化研究 ,并应用分形理论对所提取的火焰锋面进行了定量分析。试验结果表明 ,利用分形维数可以很好地描述火焰锋面的波折程度 。

With the help of an image acquisition and processing system a visualization study was conducted of the coal gas flame of a radially stratified swirl-type burner. The quantitative analysis of a separated flame front was then performed through the use of a fractal theory. The results of analysis indicate that it is possible to truthfully describe the spatial and geometric characteristics of the flame front by using a fractal dimension, thus providing an effective means for an in-depth study of the effect of flame structural shape on the mixing of fuel and air.