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A Novel Dual Fuel Reaction Mechanism for Ignition in Natural Gas–Diesel Combustion

Author

Listed:
  • Sebastian Schuh

    (Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, Getreidemarkt 9/166, 1060 Vienna, Austria)

  • Jens Frühhaber

    (Institute for Powertrains and Automotive Technology, TU Wien, Getreidemarkt 9/315, 1060 Vienna, Austria)

  • Thomas Lauer

    (Institute for Powertrains and Automotive Technology, TU Wien, Getreidemarkt 9/315, 1060 Vienna, Austria)

  • Franz Winter

    (Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, Getreidemarkt 9/166, 1060 Vienna, Austria)

Abstract

In this study, a reaction mechanism is presented that is optimized for the simulation of the dual fuel combustion process using n -heptane and a mixture of methane/propane as surrogate fuels for diesel and natural gas, respectively. By comparing the measured and calculated ignition delay times (IDTs) of different homogeneous methane–propane– n -heptane mixtures, six different n -heptane mechanisms were investigated and evaluated. The selected mechanism was used for computational fluid dynamics (CFD) simulations to calculate the ignition of a diesel spray injected into air and a natural gas–air mixture. The observed deviations between the simulation results and the measurements performed with a rapid compression expansion machine (RCEM) and a combustion vessel motivated the adaptation of the mechanism by adjusting the Arrhenius parameters of individual reactions. For the identification of the reactions suitable for the mechanism adaption, sensitivity and flow analyzes were performed. The adjusted mechanism is able to describe ignition phenomena in the context of natural gas–diesel, i.e., dual fuel combustion.

Suggested Citation

  • Sebastian Schuh & Jens Frühhaber & Thomas Lauer & Franz Winter, 2019. "A Novel Dual Fuel Reaction Mechanism for Ignition in Natural Gas–Diesel Combustion," Energies, MDPI, vol. 12(22), pages 1-32, November.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:22:p:4396-:d:288586
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    References listed on IDEAS

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    1. Li, Yu & Li, Hailin & Guo, Hongsheng & Li, Yongzhi & Yao, Mingfa, 2017. "A numerical investigation on methane combustion and emissions from a natural gas-diesel dual fuel engine using CFD model," Applied Energy, Elsevier, vol. 205(C), pages 153-162.
    2. Sebastian Schuh & Ajoy Kumar Ramalingam & Heiko Minwegen & Karl Alexander Heufer & Franz Winter, 2019. "Experimental Investigation and Benchmark Study of Oxidation of Methane–Propane–n-Heptane Mixtures at Pressures up to 100 bar," Energies, MDPI, vol. 12(18), pages 1-20, September.
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    5. Karavalakis, Georgios & Hajbabaei, Maryam & Durbin, Thomas D. & Johnson, Kent C. & Zheng, Zhongqing & Miller, Wayne J., 2013. "The effect of natural gas composition on the regulated emissions, gaseous toxic pollutants, and ultrafine particle number emissions from a refuse hauler vehicle," Energy, Elsevier, vol. 50(C), pages 280-291.
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    Cited by:

    1. Sebastian Schuh & Franz Winter, 2020. "Dual Fuel Reaction Mechanism 2.0 including NO x Formation and Laminar Flame Speed Calculations Using Methane/Propane/ n -Heptane Fuel Blends," Energies, MDPI, vol. 13(4), pages 1-31, February.
    2. Jens Frühhaber & Thomas Lauer, 2021. "Numerical Investigation of the Turbulent Flame Propagation in Dual Fuel Engines by Means of Large Eddy Simulation," Energies, MDPI, vol. 14(16), pages 1-25, August.

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