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Development of a Three Dimensional Model of Wall Fuel Liquid Film for Internal Combustion Engines
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Abstract
To simulate the air-fuel mixing in the intake ports and cylinders of internal combustion engines, a fuel liquid film model is developed for integration in 3D CFD codes. Phenomena taken into account include wall film formation by an impinging spray, film transport such as governed by mass and momentum equations with wall and air flow interactions and evaporation considering energy and convection mass transfer equations.
A continuous-fluid method is used to describe the wall film over a three dimensional complex surface. The basic approximation is that of a laminar incompressible boundary layer; the liquid film equations are written in an integral form and solved by a first-order ALE finite volume scheme; the equation system is closed without coefficient fitting requirements.
The model has been implemented in a Multi-Block version of KIVA 2 (KMB) and tested against problems having theoretical solutions. Then, it has been compared to measurements obtained in a cylindrical pipe fitted with an injector and reproducing the main characteristics of engine intake pipe flow of port injected SI engines. The film thickness, such as measured by a LIF technique, is satisfactorily reproduced by the computations for a set of operating conditions.
Finally, engine calculations were conducted showing the importance of including a liquid film model for the simulations.
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Citation
Foucart, H., Habchi, C., Le Coz, J., and Baritaud, T., "Development of a Three Dimensional Model of Wall Fuel Liquid Film for Internal Combustion Engines," SAE Technical Paper 980133, 1998, https://doi.org/10.4271/980133.Also In
References
- KELLY-ZION P. L. WHELAN D. E. LEE C. F. LUCHT R. P. PETERS J. E. AND WHITE R. A. “Intake Port and In-Cylinder Spray Measurements in Motored Spark Ignition Engine” 10th Annual Conference On Liquid Atomization and Spray System, ILASS-AMERICAS'97 Ottawa 18-21 May 1997
- SHIN Y. CHENG W. K. AND HEYWOOD J. B. “Liquid Gasoline Behavior in the Engine Cylinder of a SI Engine” SAE 941872 1994
- MIN K. -D. AND NORRIS M. “An overview of Hydrocarbon Emissions Mechanisms in Spark-Ignition Engines” SAE 932078 1993
- LE COZ J. - F. CATALANO C. BARITAUD T. “Application of Laser Induced Fluorescence for measuring the thickness of liquid films on transparent wall” 7th int. Symp. on application of laser techniques to fluid mechanics Lisbon 1994
- JOHNEN T. AND HAUG M. “Spray Formation Observation and Fuel Film Development Measurements in the Intake of a Spark Ignition Engine” SAE 950511 1995
- ALMKVIST G. DENBRATT I. JOSEFSSON G. AND MAGNUSSON I. “Measurements of Fuel Film Thickness in the Inlet Port of an S.I Engine by Laser Induced Fluorescence” SAE 952483 1995
- O'ROURKE P. J. AND AMSDEN A. A. “A Particle Numerical Model for Wall Film Dynamics in Port-Injected Engines” SAE 961961 1996
- NAGAOKA M. OHSAWA K. CRARY B. YAMADA T. SUGIURA S. IMATAKE N. “Numerical Analysis of Fuel Behavior in a Port-Injection Gasoline Engine” SAE 970878 1997
- STANTON D. W. AND RUTLAND C. J. “Modeling Fuel Film Formation and Wall Interaction in Diesel Engines” SAE 960628 1996
- BAI C. AND GOSMAN A. D. “Mathematical Modeling of Wall Films Formed by Impinging Sprays” SAE 960626 1996
- AHMADI-BEFRUI B. UCHIL N. GOSMAN A. D. AND ISSA R. I. “Modeling and Simulation of Thin Liquid Films Formed by Spray Wall Interaction” SAE 960627 1996
- HABCHI C. AND TORRES A. “A 3D Multi-Block Structured version of the Kiva-2 code” First European CFD conference Proceedings Hirch Ch. ELSEVIER 1 502 512 1992
- AMSDEN A. O'ROURKE P. BUTLER T. “KIVA-II: A Computer Program for Chemically Reactive Flows with Sprays” Los Alamos 1989
- AMSDEN A. A. “KIVA-3V: A Block-Structured KIVA Program for engines with vertical or Canted Valves” Los Alamos 1997
- HOLST M. J. “Notes on the KIVA-II Software and Chemically Reactive Fluid Mechanics” Lawrence Livermore National Laboratory Illinois 1992
- DARROZES J. S. FRANÇOIS C. “Mécanique des Fluides Incompressibles” Lecture Notes in Physics Springer-Verlag 1982
- FOUCART H. “Thesis to appear” University of Rouen France 1998
- MUDAWAR I. AND HOUPT R. A. “Measurement of Mass and Momentum Transport in a Wavy-laminar Falling Liquid Film” Int. J. Heat and Mass Transfer 36 17 4151 4162 1993
- LEDUC C. 1995
- PATANKAR S. V. “Numerical Heat Transfer and Fluid Flow” Hemisphere Publishing Corporation 1980
- INCROPERA F. P. AND DE WITT D. P. “Fundamentals of Heat and Mass Transfer” Wiley 1996
- MILLER C. A. AND NEOGI P. “Interfacial Phenomena” Surfactant Sciences Series 17 1985