A moving grid method applied to one-dimensional non-stationary flame propagation

1991 ◽  
Vol 13 (7) ◽  
pp. 869-882 ◽  
Author(s):  
A. Mack ◽  
H. J. Weber ◽  
P. Roth
Keyword(s):  
Flame Propagation ◽  
Grid Method ◽  
Moving Grid ◽  
One Dimensional

Solving moving boundary problems with an adaptive moving grid method

1998 ◽  
Vol 53 (19) ◽  
pp. 3393-3411 ◽  
Author(s):  
Jörg Frauhammer ◽  
Harald Klein ◽  
Gerhart Eigenberger ◽  
Ulrich Nowak
Keyword(s):  
Moving Boundary ◽  
Grid Method ◽  
Moving Boundary Problems ◽  
Moving Grid ◽  
Boundary Problems

scholarly journals The effects of hydrodynamic stretch on the flame propagation enhancement of ethylene by addition of ozone

2015 ◽  
Vol 373 (2048) ◽  
pp. 20140339 ◽  
Author(s):  
Matthew Pinchak ◽  
Timothy Ombrello ◽  
Campbell Carter ◽  
Ephraim Gutmark ◽  
Viswanath Katta
Keyword(s):  
Heat Release ◽  
Flame Propagation ◽  
Atmospheric Pressure ◽  
Flame Speed ◽  
Two Dimensional ◽  
Axial Stretch ◽  
Exit Velocity ◽  
One Dimensional ◽  
Burner Exit ◽  
Steady Laminar

The effect of O 3 on C 2 H 4 /synthetic-air flame propagation at sub-atmospheric pressure was investigated through detailed experiments and simulations. A Hencken burner provided an ideal platform to interrogate flame speed enhancement, producing a steady, laminar, nearly one-dimensional, minimally curved, weakly stretched, and nearly adiabatic flame that could be accurately compared with simulations. The experimental results showed enhancement of up to 7.5% in flame speed for 11 000 ppm of O 3 at stoichiometric conditions. Significantly, the axial stretch rate was also found to affect enhancement. Comparison of the flames for a given burner exit velocity resulted in the enhancement increasing almost 9% over the range of axial stretch rates that was investigated. Two-dimensional simulations agreed well with the experiments in terms of flame speed, as well as the trends of enhancement. Rate of production analysis showed that the primary pathway for O 3 consumption was through reaction with H, leading to early heat release and increased production of OH. Higher flame stretch rates resulted in increased flux through the H+O 3 reaction to provide increased enhancement, due to the thinning of the flame that accompanies higher stretch, and thus results in decreased distance for the H to diffuse before reacting with O 3 .

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