Abstract
The one-equation subgrid scale model for the Large Eddy Simulation (LES) turbulence model has been compared to the popular k-ε RNG turbulence model in very different sized direct injection diesel engines. The cylinder diameters of these engines range between 111 and 200 mm. This has been an initial attempt to study the effect of LES in diesel engines without any modification to the combustion model being used in its Reynolds-averaged Navier-Stokes (RANS) form. Despite some deficiencies in the current LES model being used, it already gave much more structured flow field with approximately the same kind of accuracy in the cylinder pressure predictions than the k-ε RNG turbulence model.
Original language | English |
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Number of pages | 9 |
Journal | SAE Technical Paper Series |
Issue number | 2003-01-1069 |
DOIs | |
Publication status | Published - 2003 |
MoE publication type | A4 Article in a conference publication |
Event | SAE World Congress and Exhibition 2003 : Computer-Aided Engineering of Vehicle and Engine Systems and Components - Detroit, United States Duration: 3 Mar 2003 → 6 Mar 2003 |
Keywords
- turbulence modeling
- LES
- RNG
- diesel engines, combustion
- emissions