本文对甲烷预混气在多孔介质中的火焰传播特性进行了实验研究,在开口竖直管中充填多孔介质,通过改变预混气氧含量使火焰在不同多孔介质中传播并测量火焰传播速度.预混气中氧含量最高达到29%.实验结果表明:多孔介质中甲烷可燃预混气火焰传播速度大于其层流火焰传播速度,可达到5倍以上(当量比的甲烷-空气预混气);多孔介质当量孔直径越大,或预混气层流火焰速度越高,则预混气火焰传播速度越高;多孔介质中可燃混气的火焰传播界限变小,当量孔直径大的多孔介质其界限值较大.实验结果与Babkin提出的多孔介质中的火焰传播机理相符.
参考文献
| [1] | Trimis D;Durst F .Combustion in a Porous Medium-Advances and Applications[J].Combustion Science and Technology,1996,121(1-6):153-168. |
| [2] | Babkin V S;Korzhavin A A;Bunev V A .Propagation of Premixed Gaseous Explosion Flames in Porous Media[J].Combustion and Flame,1991,87(11):182-190. |
| [3] | De Soete G.Stability and Propagation of CombustionWaves in Inert Porous Media[A].The Combustion Institute,1966:959-966. |
| [4] | Koester G E;Kennedy L A;Subramaniam V V.Low Temperature Wave Enhanced Combustion in Porous System[A].Madison WI,1994:6-7,55-60. |
| [5] | Pinaev A V;Lyamin G A .Fundamental Laws Governing Subsonic and Detonating Gas Combustion in Inert Porous Media[J].Combustion Explosion and Shock Waves,1989,25(04):75-85. |
| [6] | Pan H L;Picken(a)ker O;Trimis D.Characterization of Pore Diameters in Highly Porous Media[A].Las Vegas,Nevada USA,2003:21-23. |
| [7] | J. R. Howell;M. J. Hall;J. L. Ellzey .COMBUSTION OF HYDROCARBON FUELS WITHIN POROUS INERT MEDIA[J].Progress in energy and combustion science,1996(2):121-145. |
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%