APPLICATION OF ADVANCED COMBUSTION MODELS IN INTERNAL COMBUSTION ENGINES BASED ON 3-D CFD LES APPROACH
Keywords:Internal Combustion Engine, 3-D CFD, LES, tabulated chemistry, ECFM, combustion, injector, spray
This paper deals with the application of advanced simulation techniques for combustion modeling in the case of an internal combustion engine. The main focus is put on models with a high predictive ability hence 3-D CFD was selected while using LES (turbulence model) and detailed chemistry (both SI and CI ICE) or turbulent flame propagation (SI ICE). Both engine types are considered – spark ignited ICE and a compression ignited engine. Examples are shown and comparison with available experimental data is presented. The main conclusion is that such models are capable of high quality predictions while very little tuning is needed. This is desired as such models could be applied in the early phases of ICE development. On the other hand, such calculations are very demanding in terms of computational power.
M. Polášek. Eulerovský zónový model spalovacího motoru. Ph.D. thesis, Czech Technical University in Prague, Faculty of Mechanical Engineering, Prague, 1998. In Czech.
O. Vítek. Simulace deju v pístovém motoru s vlivem turbulence. Ph.D. thesis, Czech Technical University in Prague, Faculty of Mechanical Engineering, Prague, 2007. In Czech.
M. Diviš. Fuel Spray Aerodynamics in Engine Combustion Chamber. Ph.D. thesis, Czech Technical University in Prague, Faculty of Mechanical Engineering, Prague, 2006.
AVL AST. FIRE Manual v2018. AVL List GmbH, Graz, 2018.
R. I. Issa. Solution of the implicitly discretised fluid flow equations by operator-splitting. Journal of Computational Physics 62(1):40 – 65, 1986. doi:10.1016/0021-9991(86)90099-9.
O. Vítek, J. Macek, R. Tatschl, et al. Les simulation of direct injection si-engine in-cylinder flow. In SAE Technical Papers. 2012. doi:10.4271/2012-01-0138.
R. Tatschl, M. Bogensperger, Z. Pavlovic, et al. Les simulation of flame propagation in a direct-injection si-engine to identify the causes of cycle-to-cycle combustion variations. In SAE Technical Papers, vol. 2. 2013. doi:10.4271/2013-01-1084.
M. Lesieur, O. Métais, P. Comte. Large-Eddy Simulations of Turbulence. Cambridge University Press, Cambridge, 2005. doi:10.1017/CBO9780511755507.
H. Kobayashi. The subgrid-scale models based on coherent structures for rotating homogeneous turbulence and turbulent channel flow. Physics of Fluids 17(4):045104, 2005. doi:10.1063/1.1874212.
H. Kobayashi, F. Ham, X. Wu. Application of a local SGS model based on coherent structures to complex geometries. International Journal of Heat and Fluid Flow 29(3):640 – 653, 2008. doi:10.1016/j.ijheatfluidflow.2008.02.008.
J. Smagroinsky. General circulation experiments with the primitive equations, 1. The basic experiment. Monthly Weather Review 91:99 – 164, 1963.
J. K. Dukowicz. A particle-fluid numerical model for liquid sprays. Journal of Computational Physics 35(2):229 – 253, 1980. doi:10.1016/0021-9991(80)90087-X.
S. Richard, O. Colin, O. Vermorel, et al. Towards large eddy simulation of combustion in spark ignition engines. Proceedings of the Combustion Institute 31(2):3059 – 3066, 2007. doi:10.1016/j.proci.2006.07.086.
Y. Zeldovich, P. Sadovnikov, D. Frank-Kamenetskii. Oxidation of Nitrogen in Combustion. Publishing House of the Academy of Sciences of USSR, Moscow, 1947.
F. Tap, C. Meijer, D. Goryntsev, et al. Predictive CFD modeling of diesel engine combustion using an efficient workflow based on tabulated chemistry. In ASME Technical Paper - Internal Combustion Engine Division Fall Technical Conference, p. V002T06A025. 2018. doi:10.1115/ICEF2018-9758.
F. Tap, P. Schapotschnikow. Efficient combustion modeling based on Tabkin® CFD look-up tables: A case study of a lifted diesel spray flame. SAE Technical Papers 2012. doi:10.4271/2012-01-0152.
O. Vitek, V. Dolecek, D. Goryntsev, et al. Application of Tabulated Detailed Chemistry to LES Model of Diesel ICE Combustion. In ASME 2019 Internal Combustion Engine Division Fall Technical Conference. 2019. doi:10.1115/ICEF2019-7128.
J. Vavra, Z. Syrovátka, M. Takats, E. Barrientos. Scavenged pre-chamber on a gas engine for light duty truck. In ASME 2016 Internal Combustion Engine Fall Technical Conference. 2016. doi:10.1115/ICEF2016-9423.
Z. Syrovatka, M. Takats, J. Vavra. Analysis of scavenged pre-chamber for light duty truck gas engine. SAE Technical Papers 2017. doi:10.4271/2017-24-0095.
O. Vítek, V. Dolecek, M. Diviš, J. Macek. Application of predictive combustion model to CI ICE based on LES and chemical kinetics. MECCA : Journal of Middle European Construction and Design of Cars 16(2), 2018.
J. Vavra, Z. Syrovatka, O. Vítek, et al. Development of a pre-chamber ignition system for light duty truck engine. SAE Technical Papers 2018. doi:10.4271/2018-01-1147.
Z. Syrovatka, O. Vítek, J. Vavra, M. Takats. Scavenged pre-chamber volume effect on gas engine performance and emissions. SAE Technical Papers 2019. doi:10.4271/2019-01-0258.
O. Vítek, V. Dolecek, Z. Syrovátka, J. Macek. Identification of cycle-to-cycle variability sources in SI ICE based on CFD modeling. MECCA : Journal of Middle European Construction and Design of Cars 16(1), 2018.
J. B. Heywood. Internal Combustion Engine Fundamentals. McGraw-Hill, 1988.
J. Vávra, I. Bortel, M. Takáts, M. Diviš. Emissions and performance of diesel–natural gas dual-fuel engine operated with stoichiometric mixture. Fuel 208:722 – 733, 2017. doi:10.1016/j.fuel.2017.07.057.
GT-Power User’s Manual. GT-Suite version 7.3. Gamma Technologies Inc., 2012.
O. Vitek, V. Dolecek. LES CFD modeling of diesel combustion based on detailed chemistry. In Proceedings of KoKa. 2019.
G. P. Smith, D. M. Golden, M. Frenklach, et al. GRI-Mech. http://www.me.berkeley.edu/gri_mech/.
Copyright (c) 2021 Oldrich Vitek
This work is licensed under a Creative Commons Attribution 4.0 International License.Authors who publish with this journal agree to the following terms:
1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).