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Multidimensional Numerical Study of the Mixing of an Unsteady Gaseous Fuel Jet with Air in Free and in Confined Situations
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English
Abstract
The paper describes one of the steps of the numerical modeling of a cycle for a direct injection engine. The fuel injection is considered in the form of a gaseous isothermal non reacting jet which mixes with surrounding air in free or in confined situations. The model uses the equations of conservation of mass, momentum and energy. The domain is mapped with non uniform rectangular cells in cartesian, or axisymmetrical, or polar coordinates. The conservation equations are discretized in a finite difference way and are solved by a semi-implicit I.C.E. method. This theoretical model is applied to the study of the mixing of methane with air for an impulsively started round free jet and for a round jet impinging on a flat plate. In polar coordinates, the injection of methane, through four periodic slots, in confined swirling or non-swirling air is simulated, approaching the diesel engine configuration.
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Authors
Citation
Gaillard, P., "Multidimensional Numerical Study of the Mixing of an Unsteady Gaseous Fuel Jet with Air in Free and in Confined Situations," SAE Technical Paper 840225, 1984, https://doi.org/10.4271/840225.Also In
References
- Gosman, A. D. Harvey, P. S. “Computer Analysis of Fuel-Air Mixing and Combustion in an Axisymmetric D.I. Diesel” SAE Paper 820036 1982
- Cloutman, L.D. Dukowicz, J. K. Ramshaw, J. D. Amsden, A. A. “CONCHAS-SPRAY : a Computer code for reactive flows with fuel sprays” Los Alamos Scientific Laboratory report LA - 9294-MS 1982
- Ramos, J.I. Sirignano W.A. “Axisymmetric flow model with and without swirl in a piston - cylinder arrangement with idealized valve operation” SAE Paper 800284 1980
- Sahli, N. “Simulation numérique du champ aérothermodynamique dans un cylirdre de moteur alternatif”, thèse 3ème cycle Université Claude Bernard - Lyon - Octobre 1983
- Gerber, A. Ecoulements instationnaires à l'intérieur des moteurs à pistons Thèse Docteur Ingénieur, Ecole Centrale de Lyon, Université Claude Bernard 1982
- Gerber, A. Charnay, G. Bidault, M. “Comparison between steady and unsteady flows in cylinders of internal combustion engine” Paper submitted for presentation at the 1984 February SAE meeting, Detroit 1984
- Newman, J. A. Brzustowski, T. A. “Behavior of a liquid jet near the thermodynamic critical region” A. I. A. A. Journal 9 o 8 1595 1971
- Haselman, L.C. Westbrook, C. K. “A Theoretical Model for Two-Phase Fuel Injection in Stratified Charge Engines” SAE Paper 780318 1978
- Kuo, T.W. Bracco, F.V. “Computation of Drop Sizes in Pulsating Sprays and of Liquid-Core Length in Vaporizing Sprays” SAE Paper 820133 1982
- Roache, P. J. “Computational fluid dynamics” Hermosa Publishers 1972
- Favre, A. “Equations des gaz turbulents compressibles” Journal de Mécanique 4 o 3 1965
- Jones, W.P. Whitelaw, J.H. “Calculation methods for reacting turbulent flows : a Review” Combustion and Flame 48 1 26 1982
- Schlichting, H. “Boundary layer theory” 6 th edition, McGraw-Hill, New York 1968
- LAUNDER, B.E. Spalding, D.B. “The numerical computation of turbulent flows” Computer Methods in applied Mechanics and Engineering 3 269 289 1974
- Gosman, A. D. Lockwood, F.C. Syed, S. A. “Prediction of a Horizontal Free Turbulent Diffusion Flame” Sixteenth Symposium (International) on combustion, The combustion Institute, MIT Cambridge, MASS 1543 1976
- Gaillard, Ph. “Modélisation mathématique de la formation du mélange dans les jets” Internal Report 1981
- Patankar, S.V. Spalding, D.B. “Heat and mass transfer in boundary layers” 2 nd Ed, Intertext books, London 1970
- Cloutman, L.D. Hirt, C.W. Romero, N.C. “SOLA-ICE : a numerical solution algorithm for transient compressible fluid flows” Los Alamos Scientific Laboratory Report LA - 6236 1976
- Kuo, T.W. Bracco, F.V. “On the scaling of impulsively started incompressible turbulent round jets” The Combustion Institute, Spring Meeting, March 1981
- Cebecci, T. Smith, A. M. O. “Analysis of turbulent Boundary Layers” Academic Press 111 1974
- Haupais, A. “Contribution à l'étude de la combustion dans un moteur Diesel” Thèse d'Etat, Université Claude Bernard, Lyon 1981
- Haupais, A. “Phenomenological approach of combustion modelling in D.I. Diesel engine” I. Mech E Paper C 128/82 1982
- Kuo, T. W. Bracco, F.V. “On the Scaling of Transient Laminar, Turbulent, and Spray Jets” SAE Paper 820038 1982
- Rajaratnam, N. “Turbulent Jets” Elsevier Scientific publishing company 1976
- Ricou, F.P. Spalding, D.B. “Measurements of entrainment by axisymmetrical turbulent jets” J.F.M. 11 21 32 1961
- Haddar, El M. “Etude des jets axisymétriques avec et sans combustion -effet d'une paroi en incidence normale” Thèse Docteur Ingénieur, Université Claude Bernard, Lyon 1982
- Witze, P.O. “Comparisons between measurement and analysis of fluid motion in internal combustion engines” Sandra Laboratories, report SAND 81 - 8242 1981