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The knock study of methanol fuel based on multi-dimensional simulation analysis

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  • Zhen, Xudong
  • Liu, Daming
  • Wang, Yang

Abstract

Methanol is an alternative fuel, and considered to be one of the most favorable fuels for engines. In this study, knocking combustion in a developed ORCEM (optical rapid compression and expansion machine) is studied based on the multi-dimensional simulation analysis. The LES (large-eddy simulation) models coupled with methanol chemical reaction kinetics (contains 21-species and 84-elementary reactions) is adopted to study knocking combustion. The results showed that the end-gas auto-ignition first occurred in the position near the chamber wall because of the higher temperature and pressure. The H2O2 species could be a good flame front indicator. OH radicals played the major role, and the HCO radicals almost could be ignored during knocking combustion. The HCO radicals generated little, so its concentration during knocking combustion almost may be ignored. The mean reaction intensity results of CH2O, OH, H2O2, and CO were higher than others during knocking combustion. Finally, this paper put forward some new suggestions on the weakness in the knocking combustion researches of methanol fuel.

Suggested Citation

  • Zhen, Xudong & Liu, Daming & Wang, Yang, 2017. "The knock study of methanol fuel based on multi-dimensional simulation analysis," Energy, Elsevier, vol. 122(C), pages 552-559.
    • Handle: RePEc:eee:energy:v:122:y:2017:i:c:p:552-559
    DOI: 10.1016/j.energy.2017.01.106
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    References listed on IDEAS

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    1. Zhen, Xudong & Wang, Yang & Xu, Shuaiqing & Zhu, Yongsheng, 2013. "Study of knock in a high compression ratio spark-ignition methanol engine by multi-dimensional simulation," Energy, Elsevier, vol. 50(C), pages 150-159.
    2. Wei, Haiqiao & Feng, Dengquan & Pan, Mingzhang & Pan, JiaYing & Rao, XiaoKang & Gao, Dongzhi, 2016. "Experimental investigation on the knocking combustion characteristics of n-butanol gasoline blends in a DISI engine," Applied Energy, Elsevier, vol. 175(C), pages 346-355.
    3. Zhen, Xudong & Wang, Yang & Xu, Shuaiqing & Zhu, Yongsheng & Tao, Chengjun & Xu, Tao & Song, Mingzhi, 2012. "The engine knock analysis – An overview," Applied Energy, Elsevier, vol. 92(C), pages 628-636.
    4. Warzecha, Piotr & Boguslawski, Andrzej, 2014. "LES and RANS modeling of pulverized coal combustion in swirl burner for air and oxy-combustion technologies," Energy, Elsevier, vol. 66(C), pages 732-743.
    5. Zhen, Xudong & Wang, Yang, 2013. "Study of ignition in a high compression ratio SI (spark ignition) methanol engine using LES (large eddy simulation) with detailed chemical kinetics," Energy, Elsevier, vol. 59(C), pages 549-558.
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    Cited by:

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    3. Gong, Changming & Zhang, Zilei & Sun, Jingzhen & Chen, Yulin & Liu, Fenghua, 2020. "Computational study of nozzle spray-line distribution effects on stratified mixture formation, combustion and emissions of a high compression ratio DISI methanol engine under lean-burn condition," Energy, Elsevier, vol. 205(C).

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