scholarly journals Large Eddy Simulation of MILD combustion using finite rate chemistry: Effect of combustion sub-grid closure

2019 ◽  
Vol 37 (4) ◽  
pp. 4519-4529 ◽  
Author(s):  
Zhiyi Li ◽  
Alberto Cuoci ◽  
Alessandro Parente
Keyword(s):  
Large Eddy Simulation ◽  
Finite Rate ◽  
Eddy Simulation ◽  
Mild Combustion ◽  
Large Eddy

Finite Rate Chemistry Large-Eddy Simulation of Self-Ignition in Supersonic Combustion Ramjet

AIAA Journal ◽  
2010 ◽  
Vol 48 (3) ◽  
pp. 540-550 ◽  
Author(s):  
M. Berglund ◽  
E. Fedina ◽  
C. Fureby ◽  
J. Tegnér ◽  
V. Sabel'nikov
Keyword(s):  
Large Eddy Simulation ◽  
Supersonic Combustion ◽  
Finite Rate ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Supersonic Combustion Ramjet

scholarly journals Large Eddy Simulation of Premixed Stratified Swirling Flame Using the Finite Rate Chemistry Approach

2019 ◽  
Vol 2019 ◽  
pp. 1-15 ◽  
Author(s):  
Yinli Xiao ◽  
Zhengxin Lai ◽  
Wenyan Song
Keyword(s):  
Large Eddy Simulation ◽  
Large Scale ◽  
Swirling Flow ◽  
Flame Surface ◽  
Reactor Model ◽  
Finite Rate ◽  
Eddy Simulation ◽  
Major Species ◽  
Large Eddy ◽  
Swirling Flame

Large eddy simulations of a stratified swirling flow of a Cambridge swirl burner for both nonreacting and reacting cases are conducted using a finite rate chemistry approach represented by a partially stirred reactor model. The large eddy simulation predictions are compared with experimental measurements for velocity, temperature, and concentrations of major species. The agreement is found in overall trend of velocity prediction, but temperature and concentration of major species show slight discrepancies in the central region. Two reduced chemical mechanisms are examined in the present paper with the objective of assessing their capabilities in predicting swirling flame characteristics, and the distinct difference using two mechanisms is found in CO distribution profiles, which is considered the consequence of different kinetics of CO-CO2 equilibrium. Flow structures are qualitatively and quantitatively analyzed with numerical results. Large-scale vortex structures and precession motions are observed in both nonreacting and reacting cases. Frequency of vortex shedding is identified from the point data of instantaneous velocity in the discharging stream-induced shear layer. On this basis, the intensity and frequency of precession motion are shown to be enhanced in the presence of combustion. Large-scale wrinkling of the flame surface is resolved and characterized in the flame zone, and the effect of mixture stratification is then further discussed.

scholarly journals Assessment of Finite Rate Chemistry Large Eddy Simulation Combustion Models

2017 ◽  
Vol 99 (2) ◽  
pp. 385-409 ◽  
Author(s):  
E. Fedina ◽  
C. Fureby ◽  
G. Bulat ◽  
W. Meier
Keyword(s):  
Large Eddy Simulation ◽  
Finite Rate ◽  
Combustion Models ◽  
Eddy Simulation ◽  
Large Eddy
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