Advanced SearchSearch Tips
An Experimental Study on the Flame Characteristics of the Air/ Premixed Flame Using Large Axial Mean Velocity Variation
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
An Experimental Study on the Flame Characteristics of the Air/ Premixed Flame Using Large Axial Mean Velocity Variation
Kim, Nam-Il; Lee, Eun-Do; Sin, Hyeon-Dong;
  PDF(new window)
Many previous researches on the premixed flame in a tube have treated the unsteady flame behaviors in which the shape, position and intensity of the flame varied, but more detail and fundamental research has been necessary. The flame stabilization condition in a tube, a unique steady state, and the unsteady behaviors, using the stabilization condition as an initial condition, were carried out in recent years. In this paper, propane-air premixed flame was stabilized in a tube and the flame behavior was observed when the mean velocity variation was imposed into the opposite direction of the initial mean velocity. The velocity variation is larger than the burning velocity and longer than the reaction time scale. During the period of the velocity variation flame is not extinguished. But after the period of the mean velocity variation the flame could be re-stabilized or be extinguished depending on the experimental conditions: equivalence ratio, period of velocity variation and magnitude of velocity variation. The extinction mechanisms were classified into the two cases, one is caused by the flame stretch in the shear layer near the wall, and the other is caused by the vortices and vortexes, which are generted by the acoustic waves.
Premixed Flame;Flame Propagation in a Tube;Stretch;Velocity Variation;Extinction Boundary Layer;
 Cited by
Lewis, B., Elbe, G., (1987) 'Combustion, Flames and Explosions of Gases,' ACADEMIC PRESS, INC

Salamandra, G. D., (1958), 'Formation of Detonation Wave During Combustion of Gas in Combustion Tube,' Proc. Combust. Inst. 7: 851-855

Starke, R., Roth, P., (1986) 'An Experimental Investigation of Flame Behavior During Cylindrical Vessel Explosions,' Combust. Flame, 66, 249-259 crossref(new window)

Dold, J. W., Joulin, G., (1995) 'An Evolution Equation Modeling Inversion of Tulip Flames,' Combust. Flame, 100, 450-456 crossref(new window)

Clanet, C., Searby, G., (1996) 'On the 'Tulip Flame' Phenomenon,' Combust. Flame, 105, 225-238 crossref(new window)

Hackert, C. L., Ellzey, J. L., Ezekoye, O. A., (1998) 'Effects of Thermal Boundary Condition on flame Shape and Quenching in Ducts,' Combust. Flame , 112, 73-84 crossref(new window)

Markstein, G., (1956) 'A Shock Tube Study of Flame Front Pressure Wave Interaction,' Proc. Combust. Inst. 6: 387-398

Kaskan, W. E., (1953) 'An Investigation of Vibrating Flames,' Proc. Combust. Inst. 4: 575-591

Clavin, P., Pelce, P., He, L., (1990) 'One-Dimensional Vibratory Instability of Planar Flames Propagation in tubes,' J. Fluid Mech. 216, 299-322 crossref(new window)

Searby, G., Rochwerger, D., (1991) 'A Parametric Acoustic Instability in Premixed Flames,' J. Fluid Mech. 231, 529-543 crossref(new window)

최병일, 신현동, '원관내에서 진동하는 예혼합화염의 거동에 관한 실험적 연구,' 대한기계학회 1998년도 춘계학술대회논문집 B, pp. 308-313

Kim, N. I., Lee, U. D., Shin, H. D., (2000) 'Laminar Premixed Flame Propagation Using Large Axial Velocity Variation,' Proc. Combust. Inst. 28: to be published