This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Multidimensional Modeling of Injection and Combustion Phenomena in a Diesel Ignited Gas Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 28, 2017 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Using natural gas as a fuel in internal combustion engines is a promising way to obtain efficient power generation with relatively low environmental impact. Dual fuel operation is especially interesting because it can combine the safety and reliability of the basic diesel concept with fuel flexibility. To deal with the greater number of degrees of freedom caused by the interaction of two fuels and combining different combustion regimes, it is imperative to use simulation methods in the development process to gain a better understanding of the combustion behavior. This paper presents current research into ignition and combustion of a premixed natural gas/air charge with a diesel pilot spray in a large bore diesel ignited gas engine with a focus on 3D-CFD simulation. Special attention was paid to injection and combustion. The highly transient behavior of the diesel injector especially at small injection quantities poses challenges to the numerical simulation of the spray. Design of Experiments (DoE) methods were applied to identify adequate parameter sets for the spray models. Dual fuel combustion is depicted with a widely used approach, the Extended Coherent Flame Model with 3 zones (ECFM-3Z), with which it is possible to calculate all three combustion regimes simultaneously. Several adjustments are necessary to depict the dual fuel combustion processes accurately, namely the treatment of ignition delay for the dual fuel mixture, the initial flame surface density and the flame front propagation throughout the lean gas-air mixture. Detailed chemistry calculations using a dual fuel compatible reaction mechanism have been performed for the ignition delay tabulation, which has been extended to cover the two different fuels used in this combustion mode. A formula for the initial flame surface density that includes thermal expansion of the gas and turbulence influences has been derived. The flame front propagation is then also influenced by the laminar flame speed, a parameter that depends on the fuels. Finally, these models are validated with measurement data from a single cylinder research engine.
CitationEder, L., Kiesling, C., Priesching, P., Pirker, G. et al., "Multidimensional Modeling of Injection and Combustion Phenomena in a Diesel Ignited Gas Engine," SAE Technical Paper 2017-01-0559, 2017, https://doi.org/10.4271/2017-01-0559.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
|[Unnamed Dataset 3]|
- International Maritime Organization, “Nitrogen Oxides (NOx) - Regulation 13,” http://www.imo.org/en/OurWork/Environment/PollutionPrevention/AirPollution/Pages/Nitrogen-oxides-(NOx)-%25E2%2580%2593-Regulation-13.aspx, 2015.
- Buchholz, B., “Saubere Großmotoren für die Zukunft - Herausforderung für die Forschung,” 3rd Rostock Large Engine Symposium, 1-14, 2014.
- Mooser, D., “Brenngase und Gasmotoren,” in: Mollenhauer, K. and Tschöke, H., eds., Handbuch Dieselmotoren, 3rd ed., Springer, Berlin-Heidelberg: 132 ff, 2007.
- Redtenbacher, C., Kiesling, C., Sprenger, F., Fasching, P., and Eichelseder, H., “Dual Fuel Brennverfahren - Ein zukunftsweisendes Konzept vom PKW- bis zum Großmotorenbereich ?,” 37th International Vienna Motor Symposium, 403-428, 2016.
- Krenn, M., Redtenbacher, C., Pirker, G., and Wimmer, A., “A new approach for combustion modeling of large dual-fuel engines,” Heavy-Duty, On- und Off-Highway Engines 2015 - 10th International MTZ Conference, Speyer: 1-19, 2015.
- Königsson, F., “On Combustion in the CNG - Diesel Dual Fuel Engine,” Royal Institute of Technology Stockholm, ISBN 9789175952437, 2014.
- Manns, H., Brauer, M., Dyja, H., Beier, H. et al., "Diesel CNG - The Potential of a Dual Fuel Combustion Concept for Lower CO2 and Emissions," SAE Technical Paper 2015-26-0048, 2015, doi:10.4271/2015-26-0048.
- Kiesling, C., Malin, M., Wimmer, A., Pastor, J.V., and Pinotti, M., “Potential and Limitations of Dual Fuel Operation of High Speed Large Engines,” ASME 2016 Internal Combustion Fall Technical Conference.
- Hockett, A., Hampson, G., and Marchese, A.J., “Development and Validation of a Reduced Chemical Kinetic Mechanism for Computational Fluid Dynamics Simulations of Natural Gas/Diesel Dual-Fuel Engines,” Energy & Fuels 30(3):2414-2427, 2016, doi:10.1021/acs.energyfuels.5b02655.
- Abidin, Z., Florea, R., and Callahan, T., "Dual Fuel Combustion Study Using 3D CFD Tool," SAE Technical Paper 2016-01-0595, 2016, doi:10.4271/2016-01-0595.
- Maghbouli, A., Saray, R.K., Shafee, S., and Ghafouri, J., “Numerical study of combustion and emission characteristics of dual-fuel engines using 3D-CFD models coupled with chemical kinetics,” Fuel, 2013, doi:10.1016/j.fuel.2012.10.055.
- Colin, O. and Benkenida, A., “The 3-Zones Extended Coherent Flame Model (ECFM3Z) for Computing Premixed/Diffusion Combustion,” Oil Gas Sci. Technol. 59(6):593-609, 2004.
- Colin, O., Pires da Cruz, A., and Jay, S., “Detailed chemistry-based auto-ignition model including low temperature phenomena applied to 3-D engine calculations,” Proc. Combust. Inst. 30:2649-2656, 2005.
- Subramanian, G., Da Cruz, A., Colin, O., and Vervisch, L., "Modeling Engine Turbulent Auto-Ignition Using Tabulated Detailed Chemistry," SAE Technical Paper 2007-01-0150, 2007, doi:10.4271/2007-01-0150.
- Subramanian, G., Vervisch, L., and Ravet, F., "New Developments in Turbulent Combustion Modeling for Engine Design: ECFM-CLEH Combustion Submodel," SAE Technical Paper 2007-01-0154, 2007, doi:10.4271/2007-01-0154.
- Belaid-Saleh, H., Jay, S., Kashdan, J., Ternel, C. et al., "Numerical and Experimental Investigation of Combustion Regimes in a Dual Fuel Engine," SAE Technical Paper 2013-24-0015, 2013, doi:10.4271/2013-24-0015.
- Colin, O., Benkenida, A., and Angelberger, C., “3D Modeling of Mixing, Ignition and Combustion Phenomena in Highly Stratified Gasoline Engines,” Oil Gas Sci. Technol. 58(1):47-62, 2003.
- Pastor, J. V., Payri, R., and Garcia-Oliver, J., “Use of Mie + Schlieren for Multi-Hole Nozzle Visualization,” At. Sprays 21(6):503-520, 2011.
- Schlatter, S., Schneider, B., Wright, Y., and Boulouchos, K., "Experimental Study of Ignition and Combustion Characteristics of a Diesel Pilot Spray in a Lean Premixed Methane/Air Charge using a Rapid Compression Expansion Machine," SAE Technical Paper 2012-01-0825, 2012, doi:10.4271/2012-01-0825.
- Schlatter, S., Schneider, B., Wright, Y.M., and Boulouchos, K., “N-heptane micro pilot assisted methane combustion in a Rapid Compression Expansion Machine,” Fuel 179:339-352, 2016, doi:10.1016/j.fuel.2016.03.006.
- Aggarwal, S.K., Awomolo, O., and Akber, K., “Ignition characteristics of heptane-hydrogen and heptane-methane fuel blends at elevated pressures,” Int. J. Hydrogen Energy 36(23):15392-15402, 2011, doi:10.1016/j.ijhydene.2011.08.065.
- Demosthenous, E., Borghesi, G., Mastorakos, E., and Cant, R.S., “Direct Numerical Simulations of premixed methane flame initiation by pilot n-heptane spray autoignition,” Combust. Flame 163:122-137, 2016, doi:10.1016/j.combustflame.2015.09.013.
- Wang, Z. and Abraham, J., “Fundamental physics of flame development in an autoigniting dual fuel mixture,” Proc. Combust. Inst., 2015, doi:10.1016/j.proci.2014.06.079.
- Li Gasheng, Liang, J., Zhang, Z., Tian, L., Cai, Y., and Tian, L., “Experimental Investigation on Laminar Burning Velocities and Markstein Lengths of Premixed Methane-n-Heptane-Air Mixtures,” Energy & Fuels 29:4549-4556, 2015, doi:10.1021/acs.energyfuels.5b00355.
- Mehl, M., Pitz, W.J., Westbrook, C.K., and Curran, H.J., “Kinetic modeling of gasoline surrogate components and mixtures under engine conditions,” Proc. Combust. Inst. 33(1):193-200, 2011, doi:10.1016/j.proci.2010.05.027.
- Aggarwal, S.K., Fu, X., and Wijeyakulasuriya, S., “Effects of Fuel Reactivity and Injection Timing on Diesel Engine Combustion and Emissions,” Int. J. Green Energy (July 2015):141027061145001, 2014, doi:10.1080/15435075.2014.961469.
- Ó Conaire, M.., Curran, H.J.., Simmie, J.M.., Pitz, W.J.., and Westbrook, C.K.., “A comprehensive modeling study of hydrogen oxidation,” Int. J. Chem. Kinet. 36(11):603-622, 2004, doi:10.1002/kin.20036.
- Tsuru, D., Kikunaga, S., Koga, T., Takasaki, K., Pirker, G., and Wimmer, A., “Application of large-sized RCEM to a study on combustion in dual fuel gas engine operation,” 4th Rostock Large Engine Symposium, Rostock, 2016.
- Mastorakos, E., “Ignition of turbulent non-premixed flames,” Prog. Energy Combust. Sci. 35(1):57-97, 2009, doi:10.1016/j.pecs.2008.07.002.
- Kiesling, C., Gmbh, L.E.C., Redtenbacher, C., Gmbh, L.E.C., García-oliver, J.M., Universitat, C.M.T., and València, P. De, “Detailed Assessment of an Advanced Wide Range Diesel Injector for Dual Fuel Operation of Large Engines,” CIMAC Congress 2016, Helsinki, 2016.
- Bosch, W., Der Einspritzgesetz-Indikator, Mtz, 1964.
- AVL, AVL FIRE Spray Module - Version Manual 2014.1, 2014.
- Möller, S., Dutzler, G., Priesching, P., Pastor, J. et al., "Multi-Component Modeling of Diesel Fuel for Injection and Combustion Simulation," SAE Technical Paper 2013-24-0007, 2013, doi:10.4271/2013-24-0007.