TY - JOUR
T1 - Numerical study of methane/air jet flame in vitiated co-flow using tabulated detailed chemistry
AU - Han, Chao
AU - Zhang, Pei
AU - Ye, Tao Hong
AU - Chen, Yi Liang
N1 - Publisher Copyright:
© 2014, Science China Press and Springer-Verlag Berlin Heidelberg.
PY - 2014/9
Y1 - 2014/9
N2 - Two different combustion models, the autoignition (AI) model and flamelet/progress variable (FPV) model, have been applied to study the auto-ignition process of methane/air jet flame in vitiated co-flow. A priori study was conducted to test the validity of the two models. Results show that the different range of predicted reaction rates is mainly responsible for their different performances in large eddy simulation (LES) studies. In this paper, beta PDF was used to model the mixture fraction distribution, while two different shapes of PDF, delta function and beta function, were applied for the reaction progress. Compared to the FPV model, the AI model combined with beta function for reaction progress could capture the auto-ignition process and predict the exact lifted height. Also the results indicate that the variance of reaction progress plays an important role in predicting the flame lifted height.
AB - Two different combustion models, the autoignition (AI) model and flamelet/progress variable (FPV) model, have been applied to study the auto-ignition process of methane/air jet flame in vitiated co-flow. A priori study was conducted to test the validity of the two models. Results show that the different range of predicted reaction rates is mainly responsible for their different performances in large eddy simulation (LES) studies. In this paper, beta PDF was used to model the mixture fraction distribution, while two different shapes of PDF, delta function and beta function, were applied for the reaction progress. Compared to the FPV model, the AI model combined with beta function for reaction progress could capture the auto-ignition process and predict the exact lifted height. Also the results indicate that the variance of reaction progress plays an important role in predicting the flame lifted height.
KW - autoignition
KW - flamelet/progress variables
KW - large eddy simulation
KW - vitiated co-flow flame
UR - http://www.scopus.com/inward/record.url?scp=84920258898&partnerID=8YFLogxK
U2 - 10.1007/s11431-014-5604-3
DO - 10.1007/s11431-014-5604-3
M3 - Article
AN - SCOPUS:84920258898
SN - 1674-7321
VL - 57
SP - 1750
EP - 1760
JO - Science China Technological Sciences
JF - Science China Technological Sciences
IS - 9
ER -