This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Influence of Wall Impingement on the Structure of Reacting Jets
Technical Paper
2003-01-1042
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
In Diesel engines, the vapor phase of the fuel jet is known to impinge on the walls. This impingement is likely to have an effect on mixing characteristics, the structure of the diffusion flame and on pollutant formation and oxidation. These effects have not been studied in detail in the literature. In this work, the structure of a laminar wall jet that is generated from the impingement of a free laminar jet on a wall is discussed. We study the laminar jet with the belief that the local structure of the reaction zone in the turbulent reacting jet is that of a laminar flame. Results from non-reacting and reacting jets will be presented. In the case of the non-reacting jets, the focus of the inquiry is on assessing the accuracy of the computed results by comparing them with analytical results. Velocity profiles in the wall jet, growth rates of the half-width of the jet and penetration rates are presented. The velocities in the wall jets are shown to be self-similar and agree with analytical results. In the case of reacting jets, the focus of the inquiry is on the differences in the structure of the jet relative to the non-reacting jet and on the temperature and species profiles in the jet. Methane is employed as the fuel. Chemical kinetics is modeled with detailed mechanism with 53 species. Species profiles in the wall jet are compared with those in the free jet. Wall interactions are shown to affect minor species distribution in the wall jet. This, in turn, affects pollutant formation.
Recommended Content
Technical Paper | The Impact of Passenger Car Motor Oils on Emissions Performance |
Technical Paper | Numerical Analysis of Auto-ignition Process in a Non-homogeneous Mixture |
Technical Paper | Improvement of Thermal Resistance for Lean NOx Catalyst |
Authors
Citation
Song, L. and Abraham, J., "Influence of Wall Impingement on the Structure of Reacting Jets," SAE Technical Paper 2003-01-1042, 2003, https://doi.org/10.4271/2003-01-1042.Also In
References
- Abraham, J. 1996 “Entrainment Characteristics of Transient Gas Jets” Numerical Heat Transfer 30 347 364
- Dec, J. E. Tree, D. R. 2001 “Diffusion-Flame/Wall Interactions in a Heavy-Duty DI Diesel Engine” SAE Paper 2001-01-1295
- Gopalakrishnan, V. Abraham, J. Magi, V. 2002 “A Comparison of Mixing-Controlled and Flamelet Models for Diesel Combustion” SAE Paper 2002-01-1116
- Glauert, M. B. 1956 “The Wall Jet” J. Fluid Mechanics 1 6 625 643
- Smith Gregory P. Golden David M. Frenklach Michael Moriarty Nigel W. Eiteneer Boris Goldenberg Mikhail Bowman C. Thomas Hanson Ronald K. Song Soonho Gardiner William C., Jr. Lissianski Vitali V. Qin Zhiwei http://www.me.berkeley.edu/gri_mech/
- Iyer, V. Abraham, J. 1998 “The Computed Structure of a Combusting Transient Jet under Diesel Conditions” SAE Transactions 107 1669 1693
- Kazakov, A. Frenklach, M. http://www.me.berkeley.edu/drm/
- Kee, R. J. Rupley, F. M. Miller, J. A. Coltrin, M. E. Grcar, J. F. Meeks, E. Moffat, H. K. Lutz, A. E. Dixon-Lewis, G. Smooke, M. D. Warnatz, J. Evans, G. H. Larson, R. S. Mitchell, R. E. Petzold, L. R. Reynolds, W. C. Caracotsios, M. Stewart, W. E. Glarborg, P. 1999 “CHEMKIN Collection” Reaction Design, Inc. San Diego, CA 94551-0969
- Kittelson, D.B. Ambs, J.L. Hadjkacem, H. 1990 “Particulate Emissions from Diesel Engines-Influence of In-Cylinder Surface” SAE Transactions 99 1457 1472
- Magi, V. 1987 “A New 3-D Code for Flows, Sprays, and Combustion in Reciprocating and Rotary Engines” Mechanical and Aerospace Engineering Report, No. 1793 Princeton University
- Message Passing Interface (MPI) Forum 1994 “Document for a Standard Message Passing Interface.” Technical Report No. CS-93-214 University of Tennessee TN. http://www-unix.mcs.anl.gov/mpi
- Peters, N. 1984 “Laminar Flamelet Concepts in Turbulent Combustion” Progress in Energy and Combustion Science 10 319 339
- Pitsch, H. Barths, H. Peters, N. 1996 “Three Dimensional Modeling of NOx and Soot Formation in DI-Diesel Engines Using Detailed Chemistry Based on the Interactive Flamelet Approach” SAE Paper 962057
- Post, S. Iyer, V. Abraham, J. 2000 “A Study of Near-Field Entrainment in Gas Jets and Sprays under Diesel Conditions” J. Fluids Engineering 122 385 395
- Song, L. Abraham, J. 2001 “Effect of Injector Hole Size, Number and Orientation on Diesel Engine Emissions” Proceedings of the Second Joint Meeting of the US Sections of the Combustion Institute Oakland, California
- Song, L. Abraham, J. 2001 “Entrainment Characteristics of Round, Radial and Impinging Wall Jets: Theoretical Deductions” J. Fluids Engineering
- Song, L. Abraham, J. 2002 “The Structure of Wall-Impinging Jets: Computed vs. Theoretical and Measured Results” J. Fluids Engineering
- Tree, D.R. Dec J.E. 2001 “Extinction Measurements of In-Cylinder Soot Deposition in a Heavy-Duty DI Diesel Engines” SAE Paper 2001-01-1296