This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Photographic and Three Dimensional Numerical Studies of Diesel Soot Formation Process
Annotation ability available
Sector:
Language:
English
Abstract
Soot formation process was examined by high speed photographs, using a single cumbustion diesel engine with a transparent swirl chamber. Fuel-air mixture and flames, and soot clouds were visualized by the schlieren method and the back-illuminated method, respectively. A three dimensional simulation program with soot formation and oxidation models was developed to clarify diesel soot formation processes. The models consist of several models previously proposed and partly improved in this study. Good agreement was obtained between calculated and experimental results. The following points were clarified through observation and numerical studies: (1) The main soot area is considerably smaller than luminous flame area, especially in the initial soot formation process. (2) The main soot cloud first appears in the tip region of fuel-air mixture, downstream of ignition position a few submilliseconds after the ignition. It is the soot carried down from the ignition position by a gas flow. (3) Temperature is more influential in soot formation, rather than fuel vapor concentration.
Recommended Content
Authors
- Kiyomi Nakakita - Toyota Central Research & Development Laboratories, Inc.
- Makoto Nagaoka - Toyota Central Research & Development Laboratories, Inc.
- Taketoshi Fujikawa - Toyota Central Research & Development Laboratories, Inc.
- Katsuyuki Ohsawa - Toyota Central Research & Development Laboratories, Inc.
- Shigeki Yamaguchi
Citation
Nakakita, K., Nagaoka, M., Fujikawa, T., Ohsawa, K. et al., "Photographic and Three Dimensional Numerical Studies of Diesel Soot Formation Process," SAE Technical Paper 902081, 1990, https://doi.org/10.4271/902081.Also In
References
- Kontani K. Gotoh S. “Measurement of Soot in a Diesel Combustion Chamber by Light Extinction Method and In-cylinder Observation by Highspeed Shadowgraphy,” SAE Paper 831291
- Shimoda M. Suzuki T. Shigemori M. “Observation of the Particulate Formation Process in the Cylinder of a Direct Injection Diesel Engine,” SAE Paper 870268 1987
- Tani Y. Saito A. Yamada M. “Visualization of the Evaporating Process of Fuel Spray in the Cylinder of a Diesel Engine,” JSME Int. J. 32 4 673 678 1989
- Hiroyasu H. Kadota T. Arai M. “Development and Use of the Spray Combustion Modeling to Predict Diesel Engine Efficiency and Pollutant Emissions: Part II - Computational Procedure and Parametric Study,” Bulletin of JSME 26 214 576 583 1983
- Kyriakides S. C. Dent J. C. Mehta P. S. “Phenomenological Diesel Combustion Model Including Smoke and NO Emission,” SAE Paper 860330 1986
- Harvey P. S. Gosman A. D. “An Analysis of the Influence of Swirl on Combustion in D. I. Diesel Engines by Computer Simulation,” I. Mech. E. 247 258 1982
- Amsden A. A. Butler T. D. O'Rourke P. J. Ramshaw J. D. “KIVA - A Comprehensive Model for 2-D and 3-D Engine Simulations,” SAE Paper 850554 1985
- Pinchon P. “Three Dimensional Modelling of Combustion in a Prechamber Diesel Engine,” SAE Paper 890666 1989
- Shirakawa S. Ohsawa K. Aoyama T. “Simulation of Spray Combustion in an Axisymmetric Small Direct Injection Diesel Engine,” I. Mech. E. 191 198 1987
- Nagaoka M. Kawazoe H. Ohsawa K. “Prediction of the Fuel-Air Mixture Formation Process in a Gasoline Engine,” Proc. Int. Symp. on Comput. Fluid Dynamics- Nagoya 629 634 1989
- Kittelson D. B. Pipho M. J. Ambs J. L. Siegla D. C. “Particle Concentrations in a Diesel Cylinder: Comparison of Theory and Experiment,” SAE Paper 861569 1986
- Dukowicz J. K. “A Particle-Fluid Numerical Model for Liquid Sprays,” J. Comput. Phys. 35 2 229 253 1980
- Gosman A. D. Harvey P. S. “Computer Analysis of Fuel-Air Mixing and Combustion in an Axisymmetric D. I. Diesel,” SAE Paper 820036
- Shioji M. Ikegami M. “An Investigation of Equilibrium Soot Formation in Burnt Gases,” Proc. JSME Meeting 804-4 41 43 1980
- Ikegami M. Yoshihara Y. Li Xin-he “An Investigation of Soot- and PAH-formation Based on Chemical Equilibrium,” Bulletin of JSME 29 258 4256 4262 1986
- Frenklach M. Clary D. W. Gardiner W. C., Jr. Stein S. E. “Detailed Kinetic Modeling of Soot Formation in Shock-Tube Pyrolysis of Acetylene,” Proc. 20th Symp. (Int.) on Combust. 887 901 1984
- Tesner P. A. Snegiriova T. D. Knorre V. G. “Kinetics of Dispersed Carbon Formation,” Combust. and Flame 17 253 260 1971
- Farmer R. Edelman R. Wong E. “Modeling Soot Emissions in Combustion Systems,” Particulate Carbon 299 320 Plenum Press 1981
- Nagle J. Strickland-Constable R. F. “Oxidation of Carbon between 1000-2000°C,” Proc. 5thCarbon Conf. 1 154 164 1962
- Magnussen B. F. Hjertager B. H. “On Mathematical Modeling of Turbulent Combustion with Special Emphasis on Soot Formation and Combustion,” Proc. 16th Symp. (Int.) on Combust. 719 729 1977
- Butler T. D. Cloutman L. D. Dukowicz J. K. Ramshaw J. D. “CONCHAS: An Arbitrary Lagrangian-Eulerian Computer Code for Multi-component Chemically Reactive Fluid Flow at All Speeds,” Los Alamos Scientific Laboratory Report 1979