In-cylinder mixture preparation and early combustion heat release are studied using Large Eddy Simulation (LES) for direct injection (DI) diesel with high exhaust gas recirculation (EGR) and early injection timing. Both LES and traditional Reynolds Average Navier-Stokes (RANS) calculations are carried out using KIVA-3V release 2 and compared with experimental results of medium load LTC-diesel (Low Temperature Combustion) cases. Simulations presented in this paper are carried out using KH-RT (Kelvin Helmholtz – Rayleigh Taylor) breakup model for spray atomization and CHEMKIN n-heptane mechanism for combustion and both dynamic structure LES and RNG (re-normalized group) kε RANS for turbulence model. Although engine simulation using LES model poses significant challenges on practical engine grids, significant agreement with LTC-diesel experiments is observed by using an additional spray source term for modeling the effect of liquid sprays on sub-grid kinetic energy transport calculation in engines. Results when compared to RANS, demonstrate that LES is able to predict local spots of early heat release resulting in more accurate prediction of start of combustion timing and early heat release phasing. Mixing due to bulk fluid motion such as swirl is also observed more distinctively in LES calculations.
Skip Nav Destination
ASME 2009 Internal Combustion Engine Division Spring Technical Conference
May 3–6, 2009
Milwaukee, Wisconsin, USA
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
978-0-7918-4340-6
PROCEEDINGS PAPER
Investigation of In-Cylinder Mixing Using Large Eddy Simulation Models for LTC Diesel Applications
Siddhartha Banerjee,
Siddhartha Banerjee
University of Wisconsin - Madison, Madison, WI
Search for other works by this author on:
Nidheesh Bharadwaj,
Nidheesh Bharadwaj
University of Wisconsin - Madison, Madison, WI
Search for other works by this author on:
Christopher J. Rutland
Christopher J. Rutland
University of Wisconsin - Madison, Madison, WI
Search for other works by this author on:
Siddhartha Banerjee
University of Wisconsin - Madison, Madison, WI
Nidheesh Bharadwaj
University of Wisconsin - Madison, Madison, WI
Christopher J. Rutland
University of Wisconsin - Madison, Madison, WI
Paper No:
ICES2009-76031, pp. 521-527; 7 pages
Published Online:
August 20, 2009
Citation
Banerjee, S, Bharadwaj, N, & Rutland, CJ. "Investigation of In-Cylinder Mixing Using Large Eddy Simulation Models for LTC Diesel Applications." Proceedings of the ASME 2009 Internal Combustion Engine Division Spring Technical Conference. ASME 2009 Internal Combustion Engine Division Spring Technical Conference. Milwaukee, Wisconsin, USA. May 3–6, 2009. pp. 521-527. ASME. https://doi.org/10.1115/ICES2009-76031
Download citation file:
12
Views
Related Proceedings Papers
Related Articles
Quasi-Dimensional Diesel Engine Combustion Modeling With Improved Diesel Spray Tip Penetration, Ignition Delay, and Heat Release Submodels
J. Eng. Gas Turbines Power (November,2017)
Quasidimensional Modeling of Diesel Combustion Using Detailed Chemical Kinetics
J. Eng. Gas Turbines Power (August,2017)
Investigation of the Roles of Flame Propagation, Turbulent Mixing, and Volumetric Heat Release in Conventional and Low Temperature Diesel Combustion
J. Eng. Gas Turbines Power (October,2011)
Related Chapters
Antilock-Braking System Using Fuzzy Logic
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3
Determination of the Effects of Safflower Biodiesel and Its Blends with Diesel Fuel on Engine Performance and Emissions in a Single Cylinder Diesel Engine
International Conference on Software Technology and Engineering, 3rd (ICSTE 2011)
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential