摘要
对高温低氧燃烧火焰的辐射特性进行了实验测试,同时利用CFD通用软件对火焰热辐射行性进行了数值计算,得到了在不同预热空气温度、不同预热空气含氧量条件下,火焰形状及火焰热辐射特性的变化规律。结果表明:高温低氧燃烧火焰的体积与长度随着预热空气中含氧量的降低而扩大,而预热空气温度对燃烧火焰体积的影响不大。高温低氧燃烧火焰对炉膛壁面的热辐射能力随着预热空气温度的降低而下降,同时也随着预热空气含氧量的降低而下降。
The flame radiation behaviors of a furnace using High Temperature Air Combustion technology are experimentally studied. Based on diffuse combustion mode, k-ε flow model, flame radiation math model, the flame radiation characteristics burning in differeng oxygen content and different temperature of preheated air are numerically calculated by means of CFD software. The results show that the flame volume and length in high temperature air combustion increase with the decrease of oxygen content of the preheated air, and the flame radiation ability in high temperature air combustion comes down with the descent of both oxygen content and temperature of the preheated air. Figs 4 and refs 9.
出处
《动力工程》
CSCD
北大核心
2004年第3期397-399,共3页
Power Engineering
基金
上海市自然科学基金资助项目(01ZG14041)
关键词
工程热物理
火焰辐射特性
高温空气燃烧
实验研究
engineering thermophysics
flame radiation
high temperature air combustion
experimental study