TY - JOUR
T1 - Effects of aromatic chemistry-turbulence interactions on soot formation in a turbulent non-premixed flame
AU - Xuan, Y.
AU - Blanquart, G.
N1 - Funding Information:
The authors gratefully acknowledge funding from the U.S. Department of Energy-Basic Energy Sciences ( DE-SC006591 ). The authors deeply acknowledge Dr. Shaddix at Sandia National Laboratories and Dr. Mueller at Princeton University for their valuable comments and fruitful discussions.
Publisher Copyright:
© 2014 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
PY - 2015
Y1 - 2015
N2 - In this paper, Large Eddy Simulations (LES) have been performed on an ethylene/air piloted turbulent non-premixed sooting jet flame to quantify the importance of aromatic chemistry-turbulence interactions. Aromatic species are of primary importance since their concentrations control directly the soot nucleation rates. In the current work, the chemistry-turbulence interactions for benzene and naphthalene are taken into account by solving transport equations for their mass fractions. A recently developed relaxation model is used to provide closure for their chemical source terms. The effects of turbulent unsteadiness on soot yield and distribution are highlighted by comparing the LES results with a separate LES using tabulated chemistry for all species including the aromatic species. Results from both simulations are compared to experimental measurements. Overall, it is shown that turbulent unsteady effects are of critical importance for the accurate prediction of not only the inception locations, but also the magnitude and fluctuations of soot.
AB - In this paper, Large Eddy Simulations (LES) have been performed on an ethylene/air piloted turbulent non-premixed sooting jet flame to quantify the importance of aromatic chemistry-turbulence interactions. Aromatic species are of primary importance since their concentrations control directly the soot nucleation rates. In the current work, the chemistry-turbulence interactions for benzene and naphthalene are taken into account by solving transport equations for their mass fractions. A recently developed relaxation model is used to provide closure for their chemical source terms. The effects of turbulent unsteadiness on soot yield and distribution are highlighted by comparing the LES results with a separate LES using tabulated chemistry for all species including the aromatic species. Results from both simulations are compared to experimental measurements. Overall, it is shown that turbulent unsteady effects are of critical importance for the accurate prediction of not only the inception locations, but also the magnitude and fluctuations of soot.
UR - http://www.scopus.com/inward/record.url?scp=84964287484&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84964287484&partnerID=8YFLogxK
U2 - 10.1016/j.proci.2014.06.138
DO - 10.1016/j.proci.2014.06.138
M3 - Conference article
AN - SCOPUS:84964287484
SN - 1540-7489
VL - 35
SP - 1911
EP - 1919
JO - Proceedings of the Combustion Institute
JF - Proceedings of the Combustion Institute
IS - 2
T2 - 30th International Symposium on Combustion
Y2 - 25 July 2004 through 30 July 2004
ER -