3-D Simulation of the combustion process for di-methyl ether-fueled diesel engine

The characteristics of spray, auto-ignition, and the combustion process of di-methyl ether(DME) were investigated using a 3-D simulation of a combustion vessel under various engine conditions, including high temperature and pressure. Spray impingement and nonpremixed combustion models were incorpora...

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Bibliographic Details
Published in:Journal of mechanical science and technology 2010, 24(12), , pp.2597-2604
Main Authors: Lim, Jaeman, Kim, Yongrae, Lee, Sangyul, Chung, Jaewoo, Kang, Woo, Min, Kyoungdoug
Format: Article
Language:English
Subjects:
Applied sciences
Atmospheric pollution
Combustion
Computer simulation
Control
Droplets
Dynamical Systems
Engineering
Engines
Engines and turbines
Exact sciences and technology
Industrial and Production Engineering
Internal combustion engines: gazoline engine, diesel engines, etc
Mathematical models
Mechanical Engineering
Mechanical engineering. Machine design
Pollution
Pollution sources. Measurement results
Sprayers
Sprays
Three dimensional
Vibration
기계공학
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Summary:The characteristics of spray, auto-ignition, and the combustion process of di-methyl ether(DME) were investigated using a 3-D simulation of a combustion vessel under various engine conditions, including high temperature and pressure. Spray impingement and nonpremixed combustion models were incorporated into the computational fluid dynamics code, called STAR-CD. A Peng-Robinson equation of state was introduced to calculate the evaporation rate of DME droplets that were exposed to high-pressure conditions. A Laminar flamelet concept was used to simulate non-premixed combustion. A skeletal chemical kinetics mechanism consisting of 28 species and 45 reactions was used as the chemical mechanism for DME. Compared with the experimental data, the flamelet concept combustion model predicted the essential features of the combustion process and auto-ignition characteristics of the DME spray reasonably well for various initial conditions. The combustion process of a direct injection engine fueled by DME was also simulated and verified through experimental data.
ISSN:1738-494X
1976-3824
DOI:10.1007/s12206-010-0915-1