LES and RNG Turbulence Modeling in DI Diesel Engines
Copyright policy )LES and RNG Turbulence Modeling in DI Diesel Engines
<div class="htmlview paragraph">The one-equation subgrid scale model for the Large Eddy Simulation (LES) turbulence model has been compared to the popular <i>k-ε</i> 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 <i>k-ε</i> RNG turbulence model.</div>
- University of Technology Russian Federation
- Aalto University Finland
- VTT Technical Research Centre of Finland Finland
- Helsinki University of Technology Finland
turbulence modeling, LES, RNG, emissions, diesel engines, combustion
turbulence modeling, LES, RNG, emissions, diesel engines, combustion
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