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 ,为深入研究火焰形状结构对燃料与空气混合的影响提供了一个有力的手段 Through the developed image acquisition and processing system, the gas flame of a radial stratified swirl burner was visualized. The fractal theory was used to quantitatively analyze the extracted flame front. The experimental results show that the use of fractal dimension can be a good description of the fringing degree of the flame front, providing a powerful tool for further study on the effect of the flame shape structure on the fuel-air mixture