Preferential diffusion effects in opposed-flow diffusion flame with blended fuels of CH4CH4 and H2H2

2008 ◽  
Vol 33 (2) ◽  
pp. 842-850 ◽  
Author(s):  
J SOOKIM
Keyword(s):  
Diffusion Flame ◽  
Opposed Flow ◽  
Preferential Diffusion ◽  
Diffusion Effects ◽  
Blended Fuels

scholarly journals The effect of thermal expansion on diffusion flame instabilities

2010 ◽  
Vol 647 ◽  
pp. 453-472 ◽  
Author(s):  
M. MATALON ◽  
P. METZENER
Keyword(s):  
Thermal Expansion ◽  
Diffusion Flame ◽  
Initial Mixture ◽  
Surprising Result ◽  
Flame Instability ◽  
Preferential Diffusion ◽  
The Stability ◽  
Flame Instabilities ◽  
Comprehensive Characterization

In this paper we examine the effect of thermal expansion on the stability of a planar unstrained diffusion flame and provide a comprehensive characterization of diffusive-thermal instabilities while realistically accounting for density variations. The possible patterns that are likely to be observed as a result of differential and preferential diffusion are identified for a whole range of parameters including the distinct Lewis numbers associated with the fuel and oxidizer, the initial mixture strength and the flow conditions. Although we find that thermal expansion has a marked influence on flame instability, it does not play a crucial role as it does in premixed combustion. It primarily affects the parameter regime associated with the onset of the instabilities and the growth rate of the unstable modes. Perhaps the most surprising result is that its has a different influence on the various modes of instability – a destabilizing influence on the formation of cellular structures and a stabilizing influence on the onset of oscillations.

scholarly journals Opposed flow diffusion flame extensions

1981 ◽  
Vol 18 (1) ◽  
pp. 1853-1860 ◽  
Author(s):  
C.M. Kinoshita ◽  
P.J. Pagni ◽  
R.A. Beier
Keyword(s):  
Diffusion Flame ◽  
Opposed Flow

scholarly journals Chemical kinetic modeling of dimethyl carbonate in an opposed-flow diffusion flame

2005 ◽  
Vol 30 (1) ◽  
pp. 1111-1118 ◽  
Author(s):  
Pierre A. Glaude ◽  
William J. Pitz ◽  
Murray J. Thomson
Keyword(s):  
Kinetic Modeling ◽  
Diffusion Flame ◽  
Dimethyl Carbonate ◽  
Chemical Kinetic ◽  
Opposed Flow

Stretch Extinction Limits of Counterflow Diffusion Flame for Blended Fuels Including Carbon Monoxide

2002 ◽  
Vol 2002.4 (0) ◽  
pp. 21-22
Author(s):  
Tomohiro DENDA ◽  
Hironao HANAI ◽  
Kaoru MARUTA ◽  
Takashi NIIOKA ◽  
Minoru SUZUKI
Keyword(s):  
Carbon Monoxide ◽  
Diffusion Flame ◽  
Counterflow Diffusion Flame ◽  
Blended Fuels
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