Effect of flow-geometry on turbulence-scalar interaction in premixed flames

2011 ◽  
Vol 23 (12) ◽  
pp. 125107 ◽  
Author(s):  
Y. Minamoto ◽  
N. Fukushima ◽  
M. Tanahashi ◽  
T. Miyauchi ◽  
T. D. Dunstan ◽  
...  
Keyword(s):  
Premixed Flames ◽  
Scalar Interaction ◽  
Flow Geometry

scholarly journals Extinction Limits of Nonadiabatic, Catalyst-Assisted Flames in Stagnation-Point Flow

2001 ◽  
Author(s):  
Stephen B. Margolis ◽  
Timothy J. Gardner
Keyword(s):  
Stagnation Point ◽  
Heat Loss ◽  
Heat Production ◽  
Fuel Efficiency ◽  
Premixed Flames ◽  
Stagnation Point Flow ◽  
Pollutant Formation ◽  
Flow Geometry ◽  
Parameter Ranges

Abstract Because combustion is essentially an Arrhenius process, premixed flames generally can only exist within certain parameter ranges, or extinction limits, that correspond to a rate of heat production that is sufficient to sustain the reaction in a given flow geometry. Nonetheless, it is frequently desirable to extend these limits, often for the purpose of increasing fuel efficiency and/or reducing the rate of formation of pollutant species. Another emerging motivation is to allow combustion to be sustained in relatively small volumes, which are characterized by larger surface-to-volume ratios, that would otherwise lead to extinguishing levels of heat loss. Surface catalysts are widely used to achieve such enhancements with respect to efficiency and pollutant formation, and we wish to now consider the role catalysts might play with respect to nonadiabatic flames.

INTERACTIONS BETWEEN ACOUSTIC WAVES AND PREMIXED FLAMES IN POROUS CHAMBERS

1994 ◽  
Author(s):  
CHO-FAN TSENG ◽  
I. TSENG ◽  
WEN-WEI CHU ◽  
VIGOR YANG
Keyword(s):  
Acoustic Waves ◽  
Premixed Flames

SOOT DISTRIBUTION IN TURBULENT BLUFF BODY NEAR WAKE NON PREMIXED FLAMES

2018 ◽  
Author(s):  
Suzane Nascimento ◽  
Juan Jose Cruz Villanueva ◽  
Luís Fernando Figueira da Silva
Keyword(s):  
Bluff Body ◽  
Premixed Flames ◽  
Near Wake ◽  
Soot Distribution

Observation of various non-premixed flames in twin-jet counterflow

2004 ◽  
Vol 136 (1-2) ◽  
pp. 246-248 ◽  
Author(s):  
S.Y. Yang ◽  
B.K. Lee ◽  
S.H. Chung
Keyword(s):  
Premixed Flames
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