In order to improve flame stabilization in small scale combustors, there have been many research works going on non-premixed as well as on premixed flame. The present experimental study characterizes colour and shape of the premixed and non-premixed flames through a laminar co-flow burner. Various flame behaviors are observed and their stabilization limits are investigated at different fuel–air ratios. The spectroscopic approach becomes suitable method for the measurement of chemiluminescensce for both premixed and diffusion flames. Thus, we can predict the behavior of a combustion process. We observe also the intensity variation of chemiluminescence species, OH*, CH*, and C₂* for different fuel-air flow combinations. Apart from that, we have an analysis of colour variance of the premixed flame for different flame locations.

为了提高小规模燃烧器的火焰稳定性，已经有许多关于非预混火焰以及预混火焰的研究工作。本实验研究通过层流式并流燃烧器表征了预混和非预混火焰的颜色和形状。观察到各种火焰行为，并研究了在不同的燃料-空气比率下其稳定极限。光谱方法成为测量预混合和扩散火焰化学发光的合适方法。因此，我们可以预测燃烧过程的行为。我们还观察到化学发光物质OH *，CH *和C ₂的强度变化*用于不同的燃料-空气流量组合。除此之外，我们对不同火焰位置的预混火焰的颜色变化进行了分析。