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Numerical Analysis of Auto-ignition Process in a Non-homogeneous Mixture
Technical Paper
2007-01-1864
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Auto-ignition of a non-homogeneous mixture was fundamentally investigated by means of a numerical calculation based on chemical kinetics and the stochastic approach. In the present study, the auto-ignition process of n-heptane is calculated by means of a reduced mechanism developed by Seiser et. al. The non-uniform states of turbulent mixing are statistically described using probability density functions and the stochastic method, which was originally developed from Curl's model. The results show that the starting points of the low-temperature oxidation and ignition delay period are hardly affected by the equivalence-ratio variation; however, combustion duration increases with increasing variance of equivalence ratio. Furthermore, combustion duration is mainly affected by the non-homogeneity at the ignition and not very much affected by the mixing rate.
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KAWANABE, H. and ISHIYAMA, T., "Numerical Analysis of Auto-ignition Process in a Non-homogeneous Mixture," SAE Technical Paper 2007-01-1864, 2007, https://doi.org/10.4271/2007-01-1864.Also In
References
- Shimazaki N. Tsurushima T Nishimura T. Dual-Mode Combustion Concept with Premixed Diesel combustion by Direct Injection near Top Dead Center SAE Paper, 2003-01-0742
- Ishiyama T. Shioji M. Ihara T. Analysis of Ignition Processes in a Fuel Spray Using an Ignition Model Including Turbulent Mixing and Reduced Chemical Kinetics Int. J. of Engine Research 4 3 2003 155 162
- Modeling and Experiments on Ignition of Fuel Sprays Considering the Interaction between Fuel-air Mixing and Chemical Reactions Trans. SAE (J. Engines) 112-3 2003 1459 1469
- Saijyo K. Kojima T. Nishiwaki K. A Numerical Analysis of the Effect of Mixture Heterogeneity on Combustion in a Premixed Charge Compression Ignition Engine Proc. of COMODIA 2004
- Kong S. -C Reitz R. D. Modeling HCCI Engine Combustion Using Detailed Chemical Kinetics with Combustion of Turbulent Mixing Effects ASME Paper 2000-ICE-306 2000
- Kong S. -C Marriott C. D. Reitz R. D. Christensen M. Modeling and Experiments of HCCI Engine Combustion Using Detailed Chemical Kinetics with Multidimensional CFD SAE Paper 2001-01-1026
- Curl R. L. A. I Ch. En. J. 9-2 175 181
- Janicka J. Kolbe W Kollmann W. J. of Non-equilibrium Thermodynamics 4 1979 47