Jetflame of the ignition that is usually used in the work is calculated by the difference. And the analysis on the flame stability is given.
用差分法计算了工程上最常用的点火器的射流火焰，并给出火焰稳定性的分析。
2
The principle of the method and its calculation processes are discussed, and results of a stable jetflame temperature distribution are given.
文中讨论了这一方法的基本原理及实现过程，并给出了对稳态射流火焰的实测结果。
3
Through the experimental analysis on the synchronous signal of audio and video of the premixed gas jetflame, the characteristic of the flame is studied.