本文研究了氢/空气预混火焰在半开口管道中的火焰加速现象和压力发展过程.结果表明,重复布置的障碍物对火焰速度和压力提升产生显著的影响.火焰传播状态随着氢气当量比的变化而发生改变,在氢气当量比约为0.34时,火焰速度出现第一次跃变;随着氢气当量比进一步提高,火焰速度发生第二次跃变,即由爆燃转为爆轰.发生爆轰时氢气当量比的范围随着阻塞比的不同而发生变化.
参考文献
| [1] | Evan M W;Scheer M D;Schoen L J.A Study of High Velocity Flames Developed by Grids in Tubes[A].Pittsburgh,1949:168-185. |
| [2] | Moen I O;Lee J H S .Pressure Development Due to Turbulent Flame Propagation in Large-Scale Methane-Air Explosions[J].Combustion and Flame,1982,47:31-52. |
| [3] | Lee J H S;Knystautas R;Freiman A .High Speed Turbulent Deflagrations and Transition to Detonation in H2-Air Mixtures[J].Combustion and Flame,1984,56:227-239. |
| [4] | Moen I O .The Influence of Turbulence on Flame Propagation in Obstacle Environments. In: Prof of First International Specialist Meeting on Fuel-Air Explosions[Z].Montreal,1982. |
| [5] | Hjertager B H;Fuher K;Parker S J et al.Flame Acceleration of Propane-Air in a Large-Scale Obstructed Tube[J].Dynamics of Shock Waves Explosions and Detonations,1984,94:504-522. |
| [6] | Lee J H;Knystautas R;Chan C K.Turbulent Flame Propagation in Obstacle-filled Tubes[A].,1984:1663-1672. |
| [7] | 孙锦山;朱建士.理论爆轰物理[M].北京:国防工业出版社,1995:262-263. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%