This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A 2-D Flame Visualisation Technique Applied to the I.C. Engine
Annotation ability available
Sector:
Language:
English
Abstract
A two dimensional flame front visualisation technique, based on Mie scattering from particles dispersed in the combusting mixture, has been developed. The technique was used in an I.C. engine simulator to study the freely propagating flame in premised combustion. It is shown that flame front structures can be resolved for scales as low as 2×10−4 m. These scales were observed at 1500 RPM where velocity fluctuations are known to be on the order of 6 m/s.
For lean propane combustion, peninsulas and pockets of unburned mixture are observed in the postflame regions at 600 RPM. Higher turbulence levels increase the global flame front area by creating flame front corrugations of various length scales. Evidence of flame front wrinkles having sizes comparable to previously reported flame thickness in engines suggests that I.C. engine models should take into account the interaction between the velocity field and the detailed structure of the diffusive-reactive flame front zone.
Authors
Citation
Baritaud, T. and Green, R., "A 2-D Flame Visualisation Technique Applied to the I.C. Engine," SAE Technical Paper 860025, 1986, https://doi.org/10.4271/860025.Also In
References
- Gosman A.D. “Multidimensional Modeling of Cold Flows and Turbulence in Reciprocating Engines,” SAE Paper No. 850345 1985
- Blizard N.C. Keck J.C. “Experimental and Theoretical Investigation of a Turbulent Burning Model for Internal Combustion Engines,” SAE Trans. 83 846 1974
- Amsden A.A. Ramshaw J.D. O'Rourke P.J. Dukowicz J.K. “KIVA: A Computer Program for Two- and Three-Dimensional Fluid Flows with Chemical Reactions and Fuel Sprays,” Report No. LA - 10245-MS Los Alamos National Laboratory Los Alamos, New Mexico Feb. 1985
- Abraham J. Williams F.A. Bracco F.V. “A Discussion of Turbulent Flame Structure in Premixed Charge Engine,” SAE Paper 850345 1985
- Withrow L. Boyd T.A. “Photographic Flame Study in the Gasoline Engine,” Ind. Eng. Chem. 23 539 547 1931
- Witze P.O. Vilchis F.R. “Stroboscoic Laser Shadowgraph of the Effect of swirl on Homogeneous Combustion in a Spark-ignited Engine,” SAE Trans. 90 979 992 1981
- Smith J.R. “The Influence of Turbulence on Flame Structure in an Engine,” Flows in Internal Combustion Engines Uzkan T. ASME New York 67 72 1983
- Smith J.R. “Turbulent Flame Structure, in an Homogeneous-Charge Engine,” SAE Trans. 91 150 164 1982
- Boyer L. “Laser Tomographic Method for Flame Front Movement Studies,” Combustion and Flame 39 321 1980
- de Soete G. “Measurements of Initial Flame Speed by Laser Tomography,” First Specialists Meeting (International) of the Combustion Institute 49 54 1981
- Hertzberg J.R. Namazian M. Talbot L. “A Laser Tomographic Study of a Laminar Flame in a Karman Vortex Street,” Comb. Sci. Tech. 38 205 216 1984
- Dumont J.P. Borghi R. “A Qualitative Study by Laser Tomography of the Structure of Turbulent Flames,” Comb. Sci. Tech. 1985
- Johnston S.C. Robinson C.W. Rorke W.S. Smith J.R. Witze P.O. “Application of Laser Diagnostics to an Injected Engine,” SAE Trans. 88 353 370 1979
- Witze P.O. Martin J.K. Borgnakke C. “Measurements and Predictions of the Precombustion Flow Fluid Motion and Combustion Rate in a Spark Ignition Engine,” SAE Trans. 92 786 796 1983
- Ebrahimi I. Kleine R. “The Nozzle Fluid Concentration Field in Round Turbulent Free Jets and Jets Diffusion Flames,” Sixteenth Symposium (International) on Combustion, the Combustion Institute 1711 1977
- Barr P.K. Ashurst W.T. “An Interface Scheme for Turbulent Flame Propagation,” Sandia Report No 82-8773 1984
- Zur A.O. Bracco F.V. Santavicca D.A. “Preliminary Study of Flame Structure in an Internal Combustion Engine using 2-D Flow Visualization,” COMODIA 85, International Symposium on Diagnostics and Modeling of Combustion in Reciprocating Engines Tokyo, Japan September 1985
- Westbrook C.K. Pitz W.J. “Prediction of Laminar Flame Properties of Propane-Air Mixtures,” Prog, in Astro. and Aero. 95 211 1985
- Clavin P. Joulin G. “Premixed Flames in Large Scale and High Intensity Turbulent Flow,” Le Journal de Physique-Lettres 44 1 12 1983