Abstract
Characteristics of the flame stabilization in a cross flowing methane-air mixing layer were experimentally investigated. Two flame stabilization modes were observed: one is an attached flame at the junction point of the methane and air streams, and another is a lifted flame within a mixing layer. The attached flame is stabilized by a flame holding effect due to heat exchange between flame and the combustor body or by the flow disturbance at the backward step of the junction point. The lifted flame stabilization is explained by an ordinary tribrachial flame stabilization theory in which the flow velocity is matched with the flame propagation velocity. For this, flame shapes and lift-off heights were examined and their variation was also discussed. the flame propagation velocity decreases with the fuel concentration gradient. And the flashback phenomena were also explained based on a hydrodynamic flame stabilization mechanism.
| Original language | English |
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| State | Published - 2009 |
| Event | 7th Asia-Pacific Conference on Combustion, ASPACC 2009 - Taipei, Taiwan, Province of China Duration: 24 May 2009 → 27 May 2009 |
Conference
| Conference | 7th Asia-Pacific Conference on Combustion, ASPACC 2009 |
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| Country/Territory | Taiwan, Province of China |
| City | Taipei |
| Period | 24/05/09 → 27/05/09 |