Chemical Kinetic Mechanism Reduction Scheme for Diesel Fuel Surrogate

Abstract:

In this study, performance of the DRG-based chemical kinetic mechanism reduction techniques was evaluated using a diesel fuel surrogate model, which is the n-hexadecane mechanism. Following that, a new mechanism reduction scheme was developed to generate a reduced mechanism which is suitable to be applied in diesel engine applications.As a result, areduced mechanism with 49 species and 97 elementary reactions was successfully derived from the detailed mechanismwithan overall 97% reduction in species number and computational runtime in zero-dimensional closed homogeneous batch reactor simulations. After that, the reduced n-hexadecane mechanism was applied to simulate spray combustion in a constant volume bomb using OpenFOAM software. Results show that n-hexadecane alone is inappropriate to be employed as a single-component diesel surrogate as its high cetane number has resulted in advanced ignition timing. This agrees with recent study andthus fuel blending is suggested in order to match the diesel fuel kinetics and compositions.

• Periodical: Applied Mechanics and Materials (Volumes 541-542)
• Pages: 1006-1010
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.541-542.1006
• Online since: March 2014
• Authors: Hiew Mun Poon*, Ng Hoon Kiat, Su Yin Gan, Kar Mun Pang, Jesper Schramm
• Keywords: Chemical Kinetic Mechanism, Diesel, Mechanism Reduction, N-Hexadecane

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