The present article studies the working principle of a simple stove burner. The main objective of the work is to analyse the impact of the burner geometry on the flame obtained, using propane as fuel. Therefore, a mathematical model was developed based on the fluid mechanics equations for reactive flows. The model was validated through spectroscopy analysis, temperature measurement and PIV. It was concluded that the equivalence ratio of the mixture can be increased either by increasing the thermal conductivity of the mixing tube, or its length, or its thickness, or even by choosing a sharp inlet instead of a rounded one. The “snow-ball effect” (increase of the equivalence ratio with the increase of the temperature of the system) was also mathematically and experimentally proved and conclusions were drawn regarding the conditions in which this effect is relevant.

本文研究了简易炉燃烧器的工作原理。这项工作的主要目的是分析燃烧器几何形状对使用丙烷作为燃料获得的火焰的影响。因此，基于反应流的流体力学方程开发了数学模型。该模型通过光谱分析、温度测量和 PIV 进行了验证。得出的结论是，可以通过增加混合管的热导率、长度或厚度，甚至选择尖锐的入口而不是圆形的入口来增加混合物的当量比。