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On the Prediction of Spray A End of Injection Phenomenon Using Conditional Source-Term Estimation
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2020 by SAE International in United States
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In this study, the role of turbulence-chemistry interaction in diesel spray auto-ignition, flame stabilization and end of injection phenomena is investigated under engine relevant “Spray A” conditions. A recently developed diesel spray combustion modeling approach, Conditional Source-term Estimation (CSE-FGM), is coupled with Reynolds-averaged Navier-Stokes simulation (RANS) framework to study the details of spray combustion. The detailed chemistry mechanism is included through the Flamelet Generated Manifold (FGM) method. Both unsteady and steady flamelet solutions are included in the manifold to account for the auto-ignition process and the subsequent flame propagation in a diesel spray. Conditionally averaged chemical source terms are closed by the conditional scalars obtained in the CSE routine. Both non-reacting and reacting spray jets are computed over a wide range of Engine Combustion Network (ECN) diesel.
“Spray A” conditions. The reacting spray results are compared with simulations using a homogeneous reactor combustion model and a flamelet combustion model with the same chemical mechanism. The present study represents the first application of CSE for a diesel spray. The non-reacting liquid/vapour penetration, the mean and RMS mixture fraction, the reactive region, the flame lift-off and the ignition delay show a good agreement with literature data from an optically accessible combustion vessel over a wide range of tested conditions. The CSE-FGM model also shows a better capability in predicting the end-of-injection events in diesel spray combustion. Overall, the CSE-FGM model is shown to capture the experimental trends well, both quantitatively and qualitatively.
CitationFang, X., Ismail, R., Sekularac, N., and Davy, M., "On the Prediction of Spray A End of Injection Phenomenon Using Conditional Source-Term Estimation," SAE Technical Paper 2020-01-0779, 2020, https://doi.org/10.4271/2020-01-0779.
Data Sets - Support Documents
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- Bushe, W.K. and Steiner, H. , “Conditional Moment Closure for Large Eddy Simulation of Nonpremixed Turbulent Reacting Flows,” Physics of Fluids 11(7):1896-1906, 1999.
- Bilger, R., Starner, S., and Kee, R. , “On Reduced Mechanisms for Methane-Air Combustion in Nonpremixed Flames,” Combustion and Flame 80(2):135-149, 1990.
- Blomberg, C., Zeugin, L., Pandurangi, S., Bolla, M. et al. , “Modeling Split Injections of ECN Spray A Using a Conditional Moment Closure Combustion Model with RANS and LES,” SAE Int. J. Engines 9(4), January 2016.
- Dovizio, D. and Devaud, C.B. , “Doubly Conditional Source-Term Estimation (DCSE) for the Modelling of Turbulent Stratified V-Shaped Flame,” Combustion and Flame 172, October 2016.
- Dovizio, D., Labahn, J.W., and Devaud, C.B. , “Doubly Conditional Source-Term Estimation (DCSE) Applied to a Series of Lifted Turbulent Jet Flames in Cold Air,” Combustion and Flame 162(5), May 2015.
- Errico, G.D., Lucchini, T., Contino, F., Jangi, M., and Bai, X.-S. , “Comparison of Well-Mixed and Multiple Representative Interactive Flamelet Approaches for Diesel Spray Combustion Modelling,” Combustion Theory and Modelling 18(1):65-88, 2014.
- Fang, X., Ismail, R., and Davy, M. . A Study on Kinetic Mechanisms of Diesel Fuel Surrogate n-Dodecane for the Simulation of Combustion Recession. SAE Technical Paper, 2019-01-0202, 04, 2019, https://doi.org/10.4271/2019-01-0202.
- Fang, X., Ismail, R., Davy, M.H., and Camm, J. , “Numerical Studies of Combustion Recession on ECN diesel Spray A,” in ASME. Internal Combustion Engine Division Fall Technical Conference, 2018-9597.
- Girimaji, S.S. , “Assumed β-pdf Model for Turbulent Mixing: Validation and Extension to Multiple Scalar Mixing,” Combustion Science and Technology 78(4-6):177-196, 1991.
- Grout, R.W., Bushe, W.K., and Blair, C. , “Predicting the Ignition Delay of Turbulent Methane Jets Using Conditional Source-Term Estimation,” Combustion Theory and Modelling 11(6):1009-1028, 2007.
- Hansen, P.C. , “Numerical Tools for Analysis and Solution of Fredholm Integral Equations of the First Kind,” Inverse Problems 8(6):849, 1992.
- Issa, R. , “Solution of the Implicitly Discretised Fluid Flow Equations by Operator-Splitting,” Journal of Computational Physics 62(1):40-65, 1986.
- Jarrahbashi, D., Kim, S., and Genzale, C. , “Simulation of Combustion Recession after End-of-Injection at Diesel Engine Conditions,” Journal of Engineering for Gas Turbines and Power 139:03, 2017.
- Richards, K.J., Senecal, P.K., and Pomraning, E. , “Converge (v2.4),” Convergent Science, Inc., 2017.
- Kim, N., Jung, K., and Kim, Y. , “Multi-Environment pdf Modeling for N-Dodecane Spray Combustion Processes Using Tabulated Chemistry,” Combustion and Flame 192:205-220, 2018.
- Kim, S., Jarrahbashi, D., and Genzale, C. , “The Role of Turbulent-Chemistry Interaction in Simulating End-of-Injection Combustion Transients in Diesel Sprays,” SAE Technical Paper 2017-01-0838, 2017, https://doi.org/10.4271/2017-01-0838.
- Knox, B., Genzale, C., Pickett, L., and Garcia-Oliver, J. , “Combustion Recession after End of Injection in Diesel Sprays,” SAE Int. J. Engines 8(2):679-695, 2015, doi:https://doi.org/10.4271/2015-01-0797.
- Knox, B. and Genzale, C.L. , “Scaling Combustion Recession after End of Injection In Diesel Sprays,” Combustion and Flame 177(Supplement C):24-36, 2017.
- Kundu, P., Ameen, M.M., and Som, S. , “Importance of Turbulence-Chemistry Interactions at Low Temperature Engine Conditions,” Combustion and Flame 183:283-298, 2017.
- Labahn, J.W., Devaud, C.B., Sipkens, T.A., and Daun, K.J. , “Inverse Analysis and Regularisation in Conditional Source-Term Estimation Modelling,” Combustion Theory and Modelling 18(3):474-499, 2014.
- Leach, F., Ismail, R., and Davy, M. , “Engine-Out Emissions from a Modern High Speed Diesel Engine - The Importance of Nozzle Tip Protrusion,” Applied Energy 226:340-352, 2018.
- Salehi, M.M., Bushe, W.K., and Daun, K.J. , “Application of the Conditional Source-Term Estimation Model for Turbulence-Chemistry Interactions in a Premixed Flame,” Combustion Theory and Modelling 16(2):301-320, 2012.
- Maes, N., Meijer, M., Dam, N., Somers, B. et al. , “Characterization of Spray a Flame Structure for Parametric Variations in ecn Constant-Volume Vessels using Chemiluminescence and Laser-Induced Fluorescence,” Combustion and Flame 174:138-151, 2016.
- Mastorakos, E. , “Ignition of Turbulent Non-Premixed Flames,” Progress in Energy and Combustion Science 35(1):57-97, 2009.
- Pei, Y., Hawkes, E.R., Bolla, M., Kook, S. et al. , “An Analysis of the Structure of an N-Dodecane Spray Flame Using tpdf Modelling,” Combustion and Flame 168:420-435, 2016.
- Pickett, L.M. and Bruneaux, G. , “Engine Combustion Network,” Combustion Research Facility, Sandia National Laboratories, Livermore, CA, 2018, http://www.sandia.gov/ECN.
- Pickett, L.M., Genzale, C.L., Bruneaux, G., Malbec, L.-M. et al. , “Comparison of Diesel Spray Combustion in Different High-Temperature, High-Pressure Facilities,” SAE Int. J. Engines, 2010-01-2106 3:156-181, 2010, doi:https://doi.org/10.4271/2010-01-2106.
- Rhie, C.M. and Chow, W.L. , “Numerical Study of the Turbulent Flow Past an Airfoil with Trailing Edge Separation,” AIAA Journal 21:1525-1532, Nov. 1983.
- Stahl, G. and Warnatz, J. , “Numerical Investigation of Time-Dependent Properties and Extinction of Strained Methane and Propane-air Flamelets,” Combustion and Flame 85(3-4):285-299, 1991.
- Wehrfritz, A., Kaario, O., Vuorinen, V., and Somers, B. , “Large Eddy Simulation of n-Dodecane Spray Flames using Flamelet Generated Manifolds,” Combustion and Flame 167:113-131, 2016.
- Yao, T., Pei, Y., Zhong, B., Som, S., and Lu, T. , “A Hybrid Mechanism for n-Dodecane Combustion with Optimized Low-Temperature Chemistry,” in 9th US National Combustion Meeting, May 2015.