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Modeling of Diesel Sprays in a Very High Pressure Chamber, Part II: Effects of Combustion
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Abstract
Results of two- and three-dimensional computations of combustion of Diesel sprays in a very high-pressure chamber are presented. A wide range of experimental conditions are considered. Peak chamber pressure with combustion range from about 6.0 MPa to about 20 MPa. Computed and measured spray penetrations and chamber pressures are compared and shown to be in adequate agreement. Autoignition is modeled using an equation for a progress variable which measures the local and instantaneous tendency of the fuel to autoignite. High temperature chemistry is modeled using a local equilibrium model coupled to a combination of laminar and turbulent characteristic times. It is shown that scaling rules which were found to apply in vaporizing and non-vaporizing sprays also apply in the combusting sprays. The fuel-air mixing rates and burning rates increase as the ratio of the ambient density to injected density increases.
Citation
Hou, Z., Abraham, J., and Siebers, D., "Modeling of Diesel Sprays in a Very High Pressure Chamber, Part II: Effects of Combustion," SAE Technical Paper 950603, 1995, https://doi.org/10.4271/950603.Also In
References
- Gill, A.P. “Design Choices for 1990's Low Emission Diesel Engines,” SAE Paper 880350 1988
- Porter, B.C. Doyle, D.M. Faulkner, S.A. Lambert, P. Needham, J.R. Anderson, S.E. Fredholm, S. Frestad, A. “Engine and Catalyst Strategies for 1994,” SAE Paper 910604 1991
- Kamimoto, T. Kobayashi, H. “Combustion Processes in Diesel Engines,” Prog. Energy Combust. Sci. 17 163 189 1991
- Needham, J.R. Doyle, D.M. Faulkner, S.A. Freeman, H.D. “Technology for 1994,” SAE Paper 891949 1989
- Zhu, Y. Savonen, C. Johnson, N.L. Amsden, A.A. “Three-Dimensional Computations of Opposed-Piston Engine Scavenging Process,” SAE Paper 941899 1994
- Abraham, J. Magi, V. MacInnes, J. Bracco, F.V. “Gas Versus Spray Injection: Which Mixes Faster?” SAE Paper 940895 SAE Publications No. SP-1028, Diesel Combustion Processes and Emissions Control 1994
- Hou, Z.-X. Abraham, J. Siebers, D.L. “Three-Dimensional Computations of Diesel Sprays in a Very High-Pressure Chamber,” SAE Paper 941896 1994
- Beck, N.J. Uyehara, O.A. Johnson, W.P. “The Effect of Fuel Injection on Diesel Combustion,” SAE Paper 880299 1988
- Kakegawa, T. Suzuki, T. Tsujimura, K. Shimoda, N. “A Study on Combustion of High Pressure Fuel Injection for Direct Injection Diesel Engines,” SAE Paper 880422 1988
- Doyle, D.M. Needham, J.R. Falukner, S.A. Freese, R.G. “Application of an Advanced In-Line Injection System to a Heavy Duty Diesel Engine,” SAE Paper 891847 1989
- Oblander, K. Kollman, K. Kramer, M. Kutschera, I. “The Influence of High Pressure Fuel Injection on Performance and Exhaust Emissions of a High Speed Direct Injection Diesel Engine,” SAE Paper 890438 1989
- Itoh, S. Sasaki, S. Arai, K. “Advanced In-Line Pump for Medium-Duty Diesel Engines to Meet Future Emissions Regulations,” SAE Paper 910182 1991
- Uchida, N. Daisho, Y. Saito, T. “The Control of Diesel Emissions by Supercharging and Varying Fuel-Injection Parameters,” SAE Paper 920117 1992
- O'Rourke, P.J. Amsden, A.A. “Three Dimensional Numerical Simulations of the UPS-292 Stratified-Charge Engine,” SAE Paper 870597
- Grasso, F. Wey, M.-J. Abraham, J. Bracco, F.V. “Three-Dimensional Computations of Flows in a Stratified-Charge Rotary Engine,” SAE Trans. 96 1987
- Patterson, M.A. Kong, S.-C. Hampson, G.J. Reitz, R.D. “Modeling the Effects of Fuel Injection Characteristics on Diesel Engine Soot and NOx Emissions,” SAE Paper 940523 1994
- Amsden, A.A. “KIVA-3: A KIVA Program with Block-Structured Mesh for Complex Geometries,” Los Alamos Laboratory Report No. LA-12503-MS March 1993
- Wu, K.-J. Su, C.-C. Steinberger, R.L. Santavicca, D.A. Bracco, F.V. “Measurements of the Spray Angle of Atomizing Jets,” J. Fluids Engineering 105 406 413 1983
- Wu, K.-J. Santavicca, D.A. Coghe, A. Bracco, F.V. “LDV Measurements of Drop Velocity in Diesel-Type Sprays,” AIAA J. 22 1263 1270 1984
- Chatwani, A.U. Bracco, F.V. “Computation of Dense Spray Jets,” ICLASS 85 Institute of Energy London 1985
- Bracco, F.V. “Modeling of Engine Sprays,” SAE Trans. 94 1985
- Reitz, R.D. Diwaker, It. “Structure of High-Pressure Fuel Sprays,” SAE Paper 860469 1986
- Andrews, M.J. Bracco, F.V. “On the Structure of Turbulent Dense Spray Jets,” Encyclopedia of Fluid Mechanics 8 Cheremisinoff N.P. 1063 1089 1992
- MacInnes, J.M. Bracco, F.V. “Radial Distribution of Drop Size in Full-Cone Sprays,” Atomization and Sprays 1994
- Abraham, J. Bracco, F.V. “Simple Modeling of Autoignition in Diesel Engines for 3-D Computations,” SAE Trans. 102 1993
- Abraham, J. Reitz, R.D. Bracco, F.V. “Comparisons of Computed and Measured Premixed Charge Engine Combustion,” Combust. Flame 60 309 322 1985
- Siebers, D.L. “Ignition Delay Characteristics of Alternative Diesel Fuels: Implications on Cetane Number,” SAE Trans. 94 673 686 1985
- Naber, J.D. SIebers, D.L. Caton, J. Westbrook, C.K. DiJulio, S.S. “Natural Gas Autoignition Under Diesel Conditions: Experiments and Chemical Kinetic Modeling,” SAE Paper 942034 1994
- Abraham, J. MacInnes, J. “Scaling Characteristics of Gas Jets and Sprays and Implications for Combustion Chamber Designs,” 1994
- Hirschfelder, J.O. Curtiss, C.F. Bird, R.B. Molecular Theory of Gases and Liquids John Wiley New York 1954
- Reid, R.C. Prausnitz, J.M. Poling, B.E. The Properties of Gases and Liquids McGraw Hill New York 1987