This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Development of Fan Spray Simulation for Gasoline Direct Injection Engines
Technical Paper
2001-01-0962
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
In gasoline direct injection engines it is important to optimize fuel spray characteristics, which strongly affect stratified combustion process. Spray simulation is anticipated as a tool for optimizing nozzle design, but conventional simulation, which is based on experimental data and/or empirical laws regarding spray boundary condition at the nozzle exit, cannot predict the effect of various nozzle geometries on spray characteristics. In Japan, a fan spray injected from a slit type nozzle has recently been adopted for gasoline direct injection engines. This paper proposes a computational model for the fan spray. The structure of two-phase flow inside the nozzle is numerically analyzed using the volume of fluid (VOF) method in a three-dimensional CFD code based on the nozzle geometry. The results of these analyses are applied to classical linear instability theory to calculate fuel droplet mean diameter after primary breakup. These results lead the boundary condition at the nozzle exit for the spray simulation instead of experimental data and/or empirical laws. The conventional discrete droplet model (DDM) and many sub-models are used for spray calculation. Spray tip penetration, Sauter mean diameter (SMD), and spray mass flow distribution are verified for various atmospheric pressures and nozzle geometries.
Recommended Content
Authors
Citation
Okamoto, A., Sato, T., Shirabe, N., and Anezaki, Y., "Development of Fan Spray Simulation for Gasoline Direct Injection Engines," SAE Technical Paper 2001-01-0962, 2001, https://doi.org/10.4271/2001-01-0962.Also In
References
- Iwamoto Y. Noma K. Nakayama O. Yamauchi T. Ando H. Development of Direct Injection Gasoline Engine SAE 970541 1997
- Tomoda T. Sasaki S. Sawada D. Saito A. Sami H. Development of Drect Injection Gasoline Engine - Study of Stratified Mixture Formation SAE 970539 1997
- Harada J. Tomita T. Mizuno H. Mashiki Z. Ito Y. Development of Direct Injection Gasoline Engine SAE 970540 1997
- Koike M. Saito A. Tomoda T. Yamamoto Y. Research and Development of a New Direct Injection Gasoline Engine SAE 2000-01-0530 2000
- Kanda M. Baika T. Kato S. Iwamuro M. Koike M. Saito A. Application of a New Combustion Concept to Direct Injection Gasoline Engine SAE 2000-01-0531 2000
- Ueda S. Mori Y. Iwanari E. Oguma Y. Minoura Y. Development of a New Injector in Gasoline Direct Injection System SAE 2000-01-1046 2000
- Dukowicz J. K. A Particle-Fluid Numerical Model for Liquid Sprays J. Comp. Physics 35 229 253 1980
- Ren W. M. Nally J. F. Jr. Computations of Hollow-Cone Sprays from a Pressure-Swirl Injector SAE 982610 1998
- Xu M. Markle L. E. CFD-Aided Development of Spray for an Outwardly Opening Direct Injection Gasoline Injector SAE 980493 1998
- Arcoumanis C. Gavaises M. Argueyrolles B. Galzin F. Modeling of Pressure-Swirl Atomization for GDI Engines SAE 1999-01-0500 1999
- Lefebvre A. H. Atomization and Sprays Combustion: An International Series Hemisphere 1989
- Fraser R. P. Eisenklam P. Dombrowski N. Hasson D. Drop Formation from Rapidly Moving Liquid Sheets A. I. Ch. E. Journal 8 5 672 680 1962
- Hirt C. W. Nichols B. D. Volume of Fluid (VOF) Method for the Dynamics of Free Boundaries Journal of Comp. Physics 1 39 201 225 1981
- Reitz R. D. Modeling Atomization Processes in High-Pressure Vaporizing Sprays Atomization and Spray Technology 3 309 337 1987
- Liu A. B. et al. Modeling the Effects of Drop Drag and Breakup on Fuel Sprays SAE 930072 1993
- Naber J. D. Reitz R. D. Modeling Engine Spray-Wall Impingement SAE 880107 1988
- Takeda K. Sugimoto T. Tuchiya T. Ogawa M. Ueda S. Yoneshige K. Slit Nozzle Injectior for A New Concept of Direct Injection SI Gasoline Engine SAE 2000-01-1902 2000