论文部分内容阅读
为了解多孔介质内预混燃烧的温度特性和火焰面传播特性,采用红外热像仪对不同当量比和进口气体速度的甲烷/空气预混气体在泡沫陶瓷多孔介质内的燃烧进行试验研究。泡沫陶瓷材料采用碳化硅、氧化铝和氧化锆,泡沫陶瓷孔径采用394、787和1 181PPM。结果表明,火焰面移动速度和当量比呈反比,受进口气体速度的影响不明显;火焰可以向上游或向下游传播,火焰面移动速度范围为0.35~0.38 mm/s;确定了不同材料和孔径的泡沫陶瓷内的驻定燃烧当量比和自稳定当量比范围。
In order to understand the temperature characteristics and flame propagation characteristics of premixed combustion in porous media, the combustion of methane / air premixed gas with different equivalence ratios and inlet gas velocities in foam ceramic porous media was studied by infrared thermography. Foam ceramic materials using silicon carbide, alumina and zirconia, foam ceramic aperture using 394,787 and 1 181PPM. The results show that the flame velocity is inversely proportional to the equivalence ratio and is not affected by the inlet gas velocity. The flame can propagate upstream or downstream. The moving speed of the flame surface ranges from 0.35 to 0.38 mm / s. Different materials and pore sizes Of the foam ceramic in the fixed combustion equivalent ratio and self-stable equivalent ratio range.