The Effect of Residence Time and Heat Loss on NOx Formation Characteristics in the Downstream Region of CH4/Air Premixed Flame

2007 ◽  
Vol 31 (1) ◽  
pp. 99-108 ◽  
Author(s):  
Cheol-Hong Hwang ◽  
Sung-Ho Hyun ◽  
Young-Jo Tak ◽  
Chang-Eon Lee
Keyword(s):  
Heat Loss ◽  
Residence Time ◽  
Premixed Flame ◽  
Nox Formation ◽  
Downstream Region

An Investigation of the Heat Loss Model for Predicting NO Concentration in the Downstream Region of Laminar CH4/Air Premixed Flames

2009 ◽  
Vol 33 (7) ◽  
pp. 486-494
Author(s):  
Cheol-Hong Hwang ◽  
Chang-Eon Lee ◽  
Sung-Min Kum ◽  
Kee-Man Lee ◽  
Myung-Chul Shin ◽  
...  
Keyword(s):  
Heat Loss ◽  
Premixed Flames ◽  
Loss Model ◽  
Downstream Region

scholarly journals Impact of Stretch and Heat Loss on Flame Stabilization in a Lean Premixed Flame approaching Blow-off

2018 ◽  
Vol 148 ◽  
pp. 250-257 ◽  
Author(s):  
Pier Carlo Nassini ◽  
Daniele Pampaloni ◽  
Antonio Andreini
Keyword(s):  
Heat Loss ◽  
Flame Stabilization ◽  
Premixed Flame ◽  
Lean Premixed

On the Stability of Planar Premixed Flames Under Nonadiabatic Conditions and Preferential Diffusion

2017 ◽  
Vol 9 (3) ◽  
Author(s):  
Eman Al-Sarairah ◽  
Bilal Al-Hasanat ◽  
Ahmed Hachicha
Keyword(s):  
Heat Loss ◽  
Numerical Study ◽  
Lewis Number ◽  
Premixed Flame ◽  
Constant Density ◽  
Damkohler Number ◽  
Damköhler Number ◽  
Number Ratio ◽  
Preferential Diffusion ◽  
The Stability

In this paper, we provide a numerical study of the stability analysis of a planar premixed flame. The interaction of preferential diffusion and heat loss for a planar premixed flame is investigated using a thermodiffusive (constant density) model. The flame is studied as a function of three nondimensional parameters, namely, Damköhler number (ratio of diffusion time to chemical time), Lewis number (ratio of thermal to species diffusivity), and heat loss. A maximum of four solutions are identified in some cases, two of which are stable. The behavior of the eigenvalues of the linearized system of stabilty is also discussed. For low Lewis number, the heat loss plays a major role in stabilizing the flame for some moderately high values of Damköhler number. The results show the effect of increasing or decreasing Lewis number on adiabatic and nonadiabatic flames temperature and reaction rate as well as the range of heat loss at which flames can survive.

Effects of small-scale turbulence on NOx formation in premixed flame fronts

Fuel ◽  
2014 ◽  
Vol 115 ◽  
pp. 241-247 ◽  
Author(s):  
Zhuyin Ren ◽  
Hongtao Yang ◽  
Tianfeng Lu
Keyword(s):  
Premixed Flame ◽  
Small Scale ◽  
Nox Formation ◽  
Scale Turbulence

scholarly journals Effects of Pressure on Prompt NOX Formation in CH4/Air Lean Premixed Flame

2011 ◽  
Vol 77 (783) ◽  
pp. 2200-2209
Author(s):  
Jun HAYASHI ◽  
Yuichi SHIGA ◽  
Noriaki NAKATSUKA ◽  
Hiroyuki KASHIHARA ◽  
Fumiteru AKAMATSU
Keyword(s):  
Premixed Flame ◽  
Nox Formation ◽  
Lean Premixed
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