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Large Eddy Simulation of the Intake Flow in a Realistic Single Cylinder Configuration
Technical Paper
2012-01-0137
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The present paper focuses on gaining a deeper understanding about the turbulent flow inside an engine cylinder using large eddy simulation. While the main motivation of the current study is to gain a deeper understanding of the flow patterns and especially about the swirl, the background motivation of this study is the development and testing of suitable methods for the large eddy simulation of combustion engines and the validation of the used simulation methodology. In particular, we study the swirl and other flow features generated by the intake jets inside the cylinder. The simulated geometry is the Sisu Diesel 84 engine cylinder where the exhaust valves are closed and the intake valves have constant valve lifts. Furthermore, the piston has been removed so that the flow is able to exit from the opposite end of the cylinder. Special attention is paid on the generation of the computational grid so that the wall and the intake jet regions are made sufficiently fine for wall-resolved large eddy simulation. The Reynolds number, as referred to the diameter and velocity of the intake channels, is evaluated to be of the order of 80 000. The time development and the mixing capabilities of the flow are studied using passive scalars and in-cylinder flow fields of the simulation are compared with previously published results on Reynolds-Averaged Navier-Stokes simulations, particle image velocimetry measurement data and paddlewheel measurement data of the same engine cylinder configuration. The simulations reveal detailed information about the development of the flow and about the generation of the swirl. Especially it was noticed that the fill port seems to have a larger role in the generation of the swirl than the swirl port. The simulations were carried out using OpenFOAM, open source CFD software.
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Citation
Keskinen, J., Vuorinen, V., Kaario, O., and Larmi, M., "Large Eddy Simulation of the Intake Flow in a Realistic Single Cylinder Configuration," SAE Technical Paper 2012-01-0137, 2012, https://doi.org/10.4271/2012-01-0137.Also In
References
- Pope, S. B. “Turbulent Flows” Cambridge University Press 2000
- Drake, M. C. Haworth, D. C. “Advanced Gasoline Engine Development Using Optical Diagnostics and Numerical Modeling” Proc. Combust. Inst. 31 99 124 2007
- Vermorel, O. Richard, S. Colin, O. Angelberger, C Benkenida, A. Veynante, D. “Towards the Understanding of Cyclic Variability in a Spark Ignited Engine Using Multi-Cycle LES” Combust. Flame 156 1525 1541 2009
- Lilek, Ż. Nadarajah, S. Perić, M. Tindal, M. Yianneskis, M. “Measurements and Simulation of the Flow Around a Poppet Valve” Eight Symposium on Turbulent Shear Flows 1 13-2-1 13-2-6 1991
- Thobois, L Rymer, G. Soulères, T. Poinsot, T. “Large-Eddy Simulation in IC Engine Geometries,” SAE Technical Paper 2004-01-1854 2004 10.4271/2004-01-1854
- Thobois, L. Rymer, G. Soulères, T. Poinsot, T. van den Heuvel, B. “Large-Eddy Simulation for the Prediction of Aerodynamics in IC Engines” Int. J. Veh, Des. 39 368 382 2005
- Huijnen, V Somers, L. Baert, R. de Goey, L. Olbricht, C Sadiki, A. Janicka, J. “Study of Turbulent Flow Structures of a Practical Steady Engine Head Flow Using Large-Eddy Simulations” J. Fluids Eng. 128 1181 1191 2006
- Devesa, A. Moreau, J. Hélie, J. Faivre, V Poinsot, T. “Initial Conditions for Large Eddy Simulations of Piston Engine Flows” Combust. Flame 36 701 713 2005 10.1016/j.compfluid.2006.02.006
- Keskinen, J. Vuorinen, V. Larmi, M. “Large Eddy Simulation of Flow over a Valve in a Simplified Cylinder Geometry,” SAE Technical Paper 2011-01-0843 2011 10.4271/2011-01-0843
- Wu, H.-W. Perng, S.-W. “LES Analysis of Turbulent Flow and Heat Transfer in Motored Engines with Various SGS Models” Int. J. Heat Mess Transfer 45 2315 2328 2002
- Jhavar, R. Rutland, C “Using Large Eddy Simulations to Study Mixing Effects in Early Injection Diesel Engine Combustion,” SAE Technical Paper 2006-01-0871 2006 10.4271/2006-01-0871
- Goryntsev, D. Sadiki, A. Klein, M. Janicka, J. “Large Eddy Simulation Based Analysis of the Effects of Cycle-to-Cycle Variations on Air-Fuel Mixing in Realistic DISI IC-Engines” Proc. Combust. Inst. 32 2759 2766 2009
- Enaux, B. Granet, V Vermorel, O. Lacour, C Thobois, L. Dugué, V Poinsot, T. “Large-Eddy Simulations of a Motored Single-Cylinder Piston Engine: Numerical Strategies and Validation” Flow Turbulence and Combustion 86 153 177 2011 10.1007/sl0494-010-9299-7
- Liu, K. Haworth, D. “Development and Assessment of POD for Analysis of Turbulent Flow in Piston Engines,” SAE Technical Paper 2011-01-0830 2011 10.4271/2011-01-0830
- Richard, S. Colin, O. Vermorel, O. Benkedina, A. Angelberger, C. Veynante, D. “Towards Large Eddy Simulation of Combustion in Spark Ignition Engines” Proc. Combust. Inst. 31 3059 3066 2007
- Bohbot, J. Knop, V. Laget, O. Angelberger, C. Revéillé, B. “High Performance 3D CFD Codes for Complex Piston Engine Applications,” International Multidimensional Engine Modeling User's Group Meeting at the SAE Congress 2010
- Kaario, O. Lendormy, E. Sarjovaara, T. Larmi, M. et al. “In-Cylinder Flow Field of a Diesel Engine,” SAE Technical Paper 2007-01-4046 2007 10.4271/2007-01-4046
- Ferziger, J. H. Perić, M. “Computational Methods for Fluid Dynamics” Springer 1999 2 nd
- Smagorinsky, J. “General Circulation Experiments with the Primitive Equations” Monthly Weather Review 91 99 164 1963
- Grinstein, F. F. Margolin, L.G. Rider, W. J. “Implicit Large Eddy Simulation” Cambridge University Press 2007
- Fureby, C Tabor, G. Weller, G. Gosman, A. D. “A Comparative Study of Subgrid Scale Models in Homogeneous Isotropic Turbulence” Phys. Fluids 9 1416 1428 1997
- Olsson, M. Fuchs, L. “Large Eddy Simulation of the Proximal Region of a Spatially Developing Circular Jet” Phys. Fluids 8 2125 2137 1996
- Vuorinen, V. Hillamo, H. Nuutinen, M. Kaario, O. Larmi, M. Fuchs, L. “Large-Eddy Simulation of Droplet Stokes Number Effects on Turbulent Spray Shape” Atomization and Sprays 20 93 114 2010
- Sarjovaara, T. “Steady State Flow Measurements of a Diesel Engine” Master's Thesis Department of Mechanical Engineering, Helsinki University of Technology 2005
- CSC - It Center for Science “Louhi: Cray XT4/XT5” http://www.csc.fi/english/research/Computing services/computing/servers/louhi Sept. 2011
- Antila, E. Kaario, O. Kilpinen, P. Lahtinen, T. Larmi, M. Pokela, H. Saarinen, A. Stalsberg-Zarling, K. Taskinen, P. Tiainen, J. Toivanen, O. “Mastering the diesel process” Publications of the internal combustion engine laboratory, Helsinki University of Technology 79 951-22-6998-8 Espoo 2004