多孔介质微型燃烧器内甲烷燃烧特性研究

Investigation on Methane Combustion Characteristics in Microscale Porous Media Combustor

本文基于微热光伏发电系统,通过实验和数值模拟的方法,对比分析了填充多孔介质前后平板微尺度燃烧器的壁面温度和均匀性变化。同时研究了多孔介质的孔隙率大小对燃烧器壁面温度的影响。研究结果表明,在填充多孔介质后,燃烧器表面的壁面温度明显提高,温度均匀性增大。在研究多孔介质孔隙率的影响时发现,填充较大孔隙率的多孔介质时壁面峰值温度更高,填充较小孔隙率多孔介质壁面温度均匀性更好。

Based on the micro thermal photovoltaic power generation system,the wall temperature and uni-formity of the planar microscale combustor with and without porous media were compared and analyzed by ex-periment and numerical simulation. At the same time,the impact of the porous media porosity on the combus-tor wall temperature was studied. The results show that the wall temperature of the combustor is obviously in-crease with the porous medium,and the temperature uniformity is improved. When studying the influence ofporosity of porous media,it is also found that the wall temperature is increase with larger porosity,and thewall temperature uniformity becomes better with smaller porosity.