This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Coupled Fluid-Solid Simulation for the Prediction of Gas-Exposed Surface Temperature Distribution in a SI Engine
Technical Paper
2017-01-0669
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
The current trend of downsizing used in gasoline engines, while reducing fuel consumption and CO2 emissions, imposes severe thermal loads inside the combustion chamber. These critical thermodynamic conditions lead to the possible auto-ignition (AI) of fresh gases hot-spots around Top-Dead-Center (TDC). At this very moment where the surface to volume ratio is high, wall heat transfer influences the temperature field inside the combustion chamber. The use of a realistic wall temperature distribution becomes important in the case of a downsized engine where fresh gases hot spots found near high temperature walls can initiate auto-ignition. This paper presents a comprehensive numerical methodology for an accurately prediction of thermodynamic conditions inside the combustion chamber based on Conjugate Heat Transfer (CHT). The fundamental bricks for the simulation are well described: combustion modeling, CHT methodology and modeling strategy, i.e the choice of the computational domain with its appropriate boundary conditions. Conjugate Heat Transfer is solved by means of a coupled simulation between the fluid involved in the combustion and the solid engine-head and valves. Heat transfer through the fluid/solid interfaces are well captured and used to solve for the solid. Then, the resulting surface temperature distribution is used as boundary condition to solve for the fluid. The CHT is succesfully applied to the Renault H5Ft downsized direct injection engine operating at 2500 rpm. On the fluid side, the combustion simulation is validated in comparison with the experimental mean in-cylinder pressure curve. On the solid side, wall temperature values measured with thermocouples are used to assess the accurate prediction of the temperature distribution along the gas-exposed surfaces.
Recommended Content
Authors
Topic
Citation
LEGUILLE, M., Ravet, F., Le Moine, J., Pomraning, E. et al., "Coupled Fluid-Solid Simulation for the Prediction of Gas-Exposed Surface Temperature Distribution in a SI Engine," SAE Technical Paper 2017-01-0669, 2017, https://doi.org/10.4271/2017-01-0669.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 |
Also In
References
- Angelberger , C. , Poinsot , T. , and Delhay , B. Improving Near-Wall Combustion and Wall Heat Transfer Modeling in SI Engine Computations SAE Technical Paper 972881 1997 10.4271/972881
- Colin O. , Benkenida A. , and Angel-berger C. 3d modeling of mixing, ignition and combustion phenomena in highly stratified gasoline engines Oil & Gas Science and Technology Rev. IFP 58 1 47 62 2003 10.2516/ogst:2003004
- Corti , E. and Forte , C. Combination of In-Cylinder Pressure Signal Analysis and CFD Simulation for Knock Detection Purposes SAE Int. J. Engines 2 2 268 380 2010 10.4271/2009-24-0019
- Ewald J. and Peters N. a level set based flamelet model for the prediction of combustion in spark ignition engines 15th International Multidimensional Engine Modeling User’s Group Meeting, Detroit, MI 2005
- Fontanesi , S. , Cicalese , G. , D’Adamo , A. , and Pivetti , G. Validation of a CFD Methodology for the Analysis of Conjugate Heat Transfer in a High Performance SI Engine SAE Technical Paper 2011-24-0132 2011 10.4271/2011-24-0132
- Fontanesi , S. , Cicalese , G. , and Tiberi , A. Combined In-cylinder / CHT Analyses for the Accurate Estimation of the Thermal Flow Field of a High Performance Engine for Sport Car Applications SAE Technical Paper 2013-01-1088 2013 10.4271/2013-01-1088
- Iqbal , O. , Arora , K. , and Sanka , M. Thermal Map of an IC Engine via Conjugate Heat Transfer: Validation and Test Data Correlation SAE Int. J. Engines 7 1 366 374 2014 10.4271/2014-01-1180
- Kawahara , N. , Tomita , E. , and Roy , M. Visualization of Autoignited Kernel and Propagation of Pressure Wave during Knocking Combustion in a Hydrogen Spark-Ignition Engine SAE Technical Paper 2009-01-1773 2009 10.4271/2009-01-1773
- Kawahara N. , Tomita E. , and Sakata Y. auto-ignited kernels during knocking combustion in a spark-ignition engine Proceedings of the Combustion Institute 31 2 2999 3006 2007 10.1016/j.proci.2006.07.210
- Launder B. E. and Spalding D. B. the numerical computation of turbulent flows Computer Methods in Applied Mechanics and Engineering 3 2 269 289 1974 10.1016/0045-7825(74)90029-2
- Misdariis A. , Vermorel O. , and Poinsot T. les of knocking in engines using dual heat transfer and two-step reduced schemes Combustion and Flame 162 11 4304 4312 2015 10.1016/j.combustflame.2015.07.023
- Peters N. the turbulent burning velocity for large-scale and small-scale turbulence J. Fluid. Mech 384 107 132 1999
- Peters , N. , Kerschgens , B. , and Paczko , G. Super-Knock Prediction Using a Refined Theory of Turbulence SAE Int. J. Engines 6 2 953 967 2013 10.4271/2013-01-1109
- Robert A. , Richard S. , Colin O. , and Poinsot T. les study of deflagration to detonation mechanisms in a downsized spark ignition engine Combustion and Flame 162 7 2788 2807 2015 10.1016/j.combustflame.2015.04.010