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A 3D Eulerian Model to Improve the Primary Breakup of Atomizing Jet
Technical Paper
2003-01-0005
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A 3D Eulerian model has been developed to improve the primary break-up of an atomizing jet. The model is divided in three parts and is implemented in a modified version of KIVA II. The first part focuses mainly on the liquid dispersion, the second on the atomizing process itself, and the third on the adaptation of the model's mathematical formulation to the physics of the flow. Since the spray close to the injector is dense, an Eulerian formulation is thus chosen. However, when the spray is diluted, a Lagrangian formulation should then be applied. Different computations have been carried out using this new model and will be thoroughly discussed in this paper. The first calculation serves as a validation of the model. Those which follow demonstrate the importance of the internal liquid flow inside the injector on the spray development. They also manifest an influence of the air-co-flow, which assists the atomization of the spray. Last but not least, we observe the appropriate trends from the model when the pressure is increased inside the combustion chamber. The ensemble of these calculations displays the principal advantage of such a model, which enables us to follow the development of the spray upon entry into the combustion chamber, in other words, during the entire atomization process- both the primary break-up and after the secondary break-up. Beyond this point, no more initial cone angle nor initial droplet size distribution are further mandatory.
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Citation
Blokkeel, G., Barbeau, B., and Borghi, R., "A 3D Eulerian Model to Improve the Primary Breakup of Atomizing Jet," SAE Technical Paper 2003-01-0005, 2003, https://doi.org/10.4271/2003-01-0005.Also In
Computer Aided Engineering of Vehicle & Engine Systems & Components
Number: SP-1740; Published: 2003-03-03
Number: SP-1740; Published: 2003-03-03
References
- Abraham J. “What is adequate resolution in the numerical computation of transient jets?” S.A.E. 970051 1997
- Amsden A.A. et al “KIVA II: A computer program for chemically reactive flows with sprays” Los Alamos National Laboratory 1989
- Arcoumanis C. Gavaises M. French B. «Effect of fuel injection processes on te structure of Diesel sprays» SAE 970799 1997
- Bailly P. Champion M. Garréton D. «Counter-gradient diffusion in a confined turbulent premixed flame» Phys. Fluids 9 3 766 775 1987
- Blokkeel G. Demoulin F.X. Burluka A.A. Borghi R. “Modeling of two-phase flow: atomization, vaporization and combustion by using an Eulerian model” Trend In Numerical and Physical Modeling for Industrial Multiphase Flows Workshop Sept 2001
- Blokkeel G. Silvani X. Demoulin F.X. Borghi R. ‘An Eulerian model to improve the primary breakup modeling of atomizing jet” ILASS-EUROPE 2002
- Dumont N. Simonin O. Habchi C. “Cavitating flow in Diesel injectors and atomisation: a bibliographical review”” ILASS
- Faeth, G.M. “Structure and atomization properties of dense turbulent sprays” Twenty-Third Symposium on Combustion The Combustion Institute 1345 1352 1990
- Georjon T. Reitz R.D. “A drop-drop shattering collision model for multidimensional spray computations” Atom. And Sprays 9 231 254 1999
- Hiroyasu H. Arai M. Tabati «Emperical equations for the Sauter mean diameter of a Diesel spray” SAE 890464
- Hiroyasu K. Arai M. Shimizu M. «Breakup length of a liquid jet and internal flow in a nozzle» ICLASS 275 282 1991
- Huh K. Y. Gosman A. D. “A phenomenological model for Diesel spray atomisation” Int. Conf. Two Phase Flows Tsukuba, Japan 1991
- Leboissetier A. “Simulation numérique directe de l'atomisation primaire d'un jet liquide à haute vitesse» Université Pierre et Marie Curie Paris 6 2002
- Lebrère, L. «Modélisation de la turbulence au second ordre pour la simulation numérique d'écoulements dans les moteurs à pistons» 1995
- Mantel T. Borghi R. “A new model of premixed wrinkled flame based on a scalar dissipation equation” Combustion and Flamme 96 443 457 1994
- Marcer R. Le Cottier P. Chaves H. Argueyrolles B. Habchi C. Barbeau B. “A validated numerical simulation of Diesel injector flow using a VOF method” SAE 2000-01-2932 2000
- Obermeier F. Chaves H. Kirmse C. “Study of cavitation in the nozzle hole for realisitic Diesel injection conditions: VCO geometry and unsteady flow” Sept 2001
- Patterson M. A. Reitz R.D. “Modeling the effects of fuel spray characteristics on Diesel engine combustion and emission” SAE 980131 1998
- Powell C.F. et al «Development of a quantitative measurement of a Diesel spray core using synchrotron x-rays» 2001
- Powell C.F. et al “X-ray vision of fuel sprays” ILASS Europe conference Zurich 2001
- Prévost L. Carreau J.L. Roger L. «Mass flow rate ratio as a characteristic parameter for coaxial atomization» ILASS 2000
- Marcer R. «Calculs EOLE dans un injecteur centré» 2001
- Reitz, R.D. “Modeling atomization process in high-pressure vaporizing sprays” Atomization and Spray Technology 3 309 337 1987
- Reitz, R.D. “Spray Technology short course, computer modeling of sprays.” Pittsburgh, PA 1996
- Reitz, R.D. Diwakar, R. “Structure of High-Pressure Fuel Sprays” S.A.E. 870598 1987
- Tamaki N. Shimizu M. Hiroyasu H. “Enhancement of the atomisation of a liquid jet by cavitation in a nozzle hole.” Atom. And Sprays 11 125 137 2001
- Tamaki N. Shimizu M. Nishida K. Hiroyasu H. “Effect of cavitation and internal flow on atomisation of a liquid jet” Atomization and Sprays 8 179 197 1998
- Vallet A. Burluka A.A. Borghi A. “Development of an Eulerian model for the “atomization” of a liquid jet” Atomization and Spray 11 619 642 2001
- Wu P.K. Faeth G.M. “Aerodynamic effects on primary breakup of turbulent liquids” Atomization and Sprays 3 265 289 1993