中文摘要：

针对一种圆柱多孔壁面组织渗透燃烧微尺度燃烧器,本文在甲烷/空气不同燃料当量比和混合气流量下,对比实验了关键参数燃烧室内径（d）和燃烧室高度（h）变化对燃烧器性能的影响。结果表明随燃烧室内径减小,吹熄极限速度显著下降,烟气平均温度升高,同时壁面温度下降;燃烧室高度减小,可燃烧极限当量比和淬熄极限速度均增大;在高径比h/d接近1时,烟气平均温度最高,壁面最高温度不变,大流量下壁面温度降低更快。因此,当缩小壁面渗透微燃烧器时,为防止燃烧效率降低和热损失增加,应优先缩小内径并保持高径比接近1.0。

英文摘要：

At different fuel equivalence ratio and mixture flow rate of methane/air mixture, based on penetration combustion in a micro combustor with cylindrical porous wall, this study investigated the key parameters, both inner diameter （d） and height （h） of chamber, how to influence the performance of the combustor. The results showed the blow off velocity decreased quickly while d reduced, and the mean temperature of exhaust gas （Tg,m） increased, but the mean temperature of wall （Tw,m） decreased. When h reducing, the flammable equivalence ratio and quenching velocity increased, the Tg,m increased firstly and then unchanged, and the highest Tw,m was unchanged; At h/d near equal to 1.0, Tg,m was highest. In order to stop combustion efficiency decreasing and heat loss increasing when smaller scaling micro-combustion with penetration combustion, it prefers to choose smaller diameter and keep h/d about 1.0.