Parametric effects on sooting in turbulent acetylene diffusion flames
Parametric effects on sooting in turbulent acetylene diffusion flames
复制标题
湍流乙炔扩散火焰中烟灰的参数效应
DOI：
10.1016/0010-2180(84)90003-8
复制
发表时间：
1984
影响因子：
4.4
通讯作者：
S. Bastin
中科院分区：
文献类型：
--
作者：
J. Kent;S. Bastin
本文对自由湍流扩散乙炔火焰在不同速度和喷嘴尺寸下的消光和温度进行了测量。测量结果表明，碳烟体积分布的规模作为火焰时间常数。烟尘的形成和氧化速率在低流速下由混合速率控制，在高流速下由烟尘动力学控制。下游氧化区域的温度是火焰冒烟倾向的最重要决定因素。惰性稀释剂大大降低了烟灰的形成和燃尽率，而O2的加入增加了烟灰的形成率。
Optical extinction and temperature measurements have been made in free turbulent diffusion acetylene flames over a wide range of velocities and nozzle sizes. The measurements show that the soot volume profiles scale as the flame time constant. Soot formation and oxidation rates are controlled by mixing rates at low flow rates and by soot kinetics at high flow rates. The temperature in the downstream oxidizing region is the most important determinant of the flame's smoking propensity. Inert diluents greatly reduce soot formation and burnout rates and O2addition increases formation rates.