This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Reduced Chemical Mechanism for the Calculation of Ethanol / Air Flame Speeds
Technical Paper
2015-24-2492
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Ethanol currently remains the leading biofuel in the transportation sector, with special focus on spark ignition engines, as a pure as well as a blend component. In order to provide reliable numerical simulations of gasoline combustion processes under the influence of ethanol for modern engine research, it is mandatory to develop well validated detailed kinetic combustion models. One key parameter for the numerical simulation is the laminar burning velocity. Under the aspect of minimizing the general simulation effort for burning velocities, well-validated models have to be reduced. As a base kinetic mechanism for the reduction and optimisation process with respect to burning velocity calculations, a detailed model presented by Zhao et al. (Int. J. Chem. Kin. 40 (1) (2007) 1-18) is chosen. The model has been extensively validated against shock tube, rapid compression machine and burning velocity data. The detailed model consists of 55 species and 290 reactions. A stochastic model calibration approach is undertaken for the optimisation of the base mechanism against data found in the literature. New experimental data at 5 bar and 373 K are used for validation. The optimised mechanism is significantly reduced within this work applying a multi-stage reduction strategy using the directed relation graph with error propagation (DRGEP) technique. The reduced mechanism is again validated with the experimental data used before. Overall, the reduced mechanism consists of 36 species and 215 reactions. It predicts experimental flame speeds very well.
Authors
Citation
Beeckmann, J., Cai, L., Schaback, D., Hesse, R. et al., "Reduced Chemical Mechanism for the Calculation of Ethanol / Air Flame Speeds," SAE Technical Paper 2015-24-2492, 2015, https://doi.org/10.4271/2015-24-2492.Also In
References
- Zhao , Z. , Chaos , M. , Kazakov , A. , Dryer , F. L. , Thermal Decomposition Reaction and a Comprehensive Kinetic Model of Dimethyl Ether International Journal of Chemical Kinetics 1 18 2007
- Veloo , P. S. , Wang , Y. L. , Egolfopoulos , F. N. , Westbrook , C. K. , A comparative experimental and computational study of methanol, ethanol, and n-butanol flames Combustion and Flame 157 1989 2004 2010
- Bradley , D. , Lawes , M. , Mansour , M. S. , Explosion bomb measurements of ethanol-air laminar gaseous flame characteristics at pressures up to 1.4 MPa Combustion and Flame 156 1462 1470 2009
- Beeckmann , J. , Cai , L. , Pitsch , H. , Experimental investigation of the laminar burning velocities of methanol, ethanol, n-propanol, and n-butanol at high pressure Fuel 117 340 350 2014
- Poling , B. E. , Prausnitz , J. M. , O'Connell , J. P. , The properties of Gases and Liquids McGraw-Hill New York 2000
- Daly , C. A. , Simmie , J. M. , Würmel , J. , Djebali , N. , Paillard , C. , Burning Velocities of Dimethyl Ether and Air Combustion and Flame 125 1329 1340 2001
- Qin , X. , Ju , Y. , Measurements of burning velocities of dimethyl ether and air premixed flames at elevated pressures Proceedings of the Combustion Institute 30 1 233 240 2005
- Beeckmann , J. , Röhl , O. , and Peters , N. Experimental and Numerical Investigation of Iso-Octane, Methanol and Ethanol Regarding Laminar Burning Velocity at Elevated Pressure and Temperature SAE Technical Paper 2009-01-1774 2009 10.4271/2009-01-1774
- Menrad , H. and König , A. , Alkoholkraftstoffe Springer Verlag Wien 1982
- Chemisch-physikalische Daten von Otto- und Dieselkraftstoffen Forschungsbericht 409 DGMK 1993
- Waldmann , H. and Seidel , G. H. , Kraft- und Schmierstoffe Walter de Gruyter Berlin 1997
- Halter , F. , Tahtou , T. , Mounaim-Rosselle , C. , Nonlinear effects of stretch on the flame front propagation Combustion and Flame 157 10 1825 1832 2010
- Kelley , A. P. , Law , C. K. , Jomaas , G. , Critical radius for sustained propagation of spark-ignited spherical flames Combustion and Flame 156 1006 1013 2009
- Starikovskii , A. Y. , Plasma supported Combustion Proceedings of the Combustion Institute 30 2 2405 2417 2005
- Otsu , N. , A threshold selection method from grey level histograms IEEE Transactions on Systems Management and Cybernetics 9 62 69 1979
- Marinov , N. M. , A detailed chemical kinetic model for high temperature ethanol oxidation International Journal of Chemical Kinetics 31 3 183 220 1999
- Saxena , P and Williams F. A, Numerical and experimental studies of ethanol flames Proceedings of the Combustion Institute 31 1149 1156 2007
- Röhl , O. and Peters , N. , A Reduced Mechanism for Ethanol Oxidation European Combustion Meeting Wien 2009
- Li , J. , Zhao , Z. , Kazakov , A. , Chaos , M. , Dryer F. L. , Scire Jr. , J. J. A comprehensive kinetic mechanism for CO, CH2O and CH3OH combustion International Journal of Chemical Kinetics 39 109 136 2007
- Liming , Cai , Heinz , Pitsch Mechanism optimization based on reaction rate rules Combustion and Flame 161 405 415 2014
- Pepiot-Desjardins , P. , Pitsch , H. , An efficient error-propagation-based reduction method for large chemical kinetic mechanisms Combustion and Flame 154 1-2 67 81 2008
- Pitsch , H. , FlameMaster: A C++ computer programm for 0D combustion and 1D laminar flame calculations