为了提高燃烧室中燃料的利用率,避免火焰的全局熄火,对于熄火和再燃现象的研究是十分必要的.利用一维湍流(ODT)模型研究了非预混湍流射流火焰中的熄火和再燃现象.在固定雷诺数为10 000的情况下,对两个不同的火焰进行了模拟,这两个火焰具有不同的全局混合速率.熄火现象主要发生在近场区域.随着全局混合速率的增加,局部熄火的区域也随之增加.两个火焰的最大熄火区域分别为20%和62%.在熄火区域,主要污染物NO迅速减少.模拟结果显示熄火是一个快速的过程,而与之相对应的再燃过程则较为缓慢. In order to improve the utilization of fuel in the combustion chamber and avoid the global flameout, it is necessary to study the phenomenon of flameout and reburning.The ODT model is used to study the flameout and reburning in non-premixed turbulent jet flame In the case of a fixed Reynolds number of 10,000, two different flames were simulated, and the two flames had different global mixing rates.The quenching phenomenon mainly occurred in the near-field region.With the increase of the global mixing rate, The area of ​​partial flameout also increased, and the maximum flameout areas of the two flames were 20% and 62%, respectively. In the flameout area, the main pollutant NO decreased rapidly.The simulation results showed that the flameout was a rapid process, The reburning process is more slow.