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Reaction Mechanism Reduction for Ozone-Enhanced CH 4 /Air Combustion by a Combination of Directed Relation Graph with Error Propagation, Sensitivity Analysis and Quasi-Steady State Assumption

Author

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  • Yingzu Liu

    (State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

  • Zhihua Wang

    (State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

  • Liang Li

    (School of Engineering and Technology, University of Hertfordshire, Herts AL10 9AB, UK)

  • Kaidi Wan

    (State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

  • Kefa Cen

    (State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

Abstract

In this study, an 18-steps, 22-species reduced global mechanism for ozone-enhanced CH 4 /air combustion processes was derived by coupling GRI-Mech 3.0 and a sub-mechanism for ozone decomposition. Three methods, namely, direct relation graphics with error propagation, (DRGRP), sensitivity analysis (SA), and quasi-steady-state assumption (QSSA), were used to downsize the detailed mechanism to the global mechanism. The verification of the accuracy of the skeletal mechanism in predicting the laminar flame speeds and distribution of the critical components showed that that the major species and the laminar flame speeds are well predicted by the skeletal mechanism. However, the pollutant NO was predicated inaccurately due to the precursors for generating NO were removed as redundant components. The laminar flame speeds calculated by the global mechanism fit the experimental data well. The comparisons of simulated results between the detailed mechanism and global mechanism were investigated and showed that the global mechanism could accurately predict the major and intermediate species and significantly reduced the time cost by 72%.

Suggested Citation

  • Yingzu Liu & Zhihua Wang & Liang Li & Kaidi Wan & Kefa Cen, 2018. "Reaction Mechanism Reduction for Ozone-Enhanced CH 4 /Air Combustion by a Combination of Directed Relation Graph with Error Propagation, Sensitivity Analysis and Quasi-Steady State Assumption," Energies, MDPI, vol. 11(6), pages 1-12, June.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:6:p:1470-:d:150946
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    References listed on IDEAS

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    1. Tao Liu & Fuqiang Bai & Zixuan Zhao & Yuzhen Lin & Qing Du & Zhijun Peng, 2017. "Large Eddy Simulation Analysis on Confined Swirling Flows in a Gas Turbine Swirl Burner," Energies, MDPI, vol. 10(12), pages 1-18, December.
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    3. Gordon Fru & Dominique Thévenin & Gábor Janiga, 2011. "Impact of Turbulence Intensity and Equivalence Ratio on the Burning Rate of Premixed Methane–Air Flames," Energies, MDPI, vol. 4(6), pages 1-16, May.
    4. Jun Li & Hongyu Huang & Huhetaoli & Yugo Osaka & Yu Bai & Noriyuki Kobayashi & Yong Chen, 2017. "Combustion and Heat Release Characteristics of Biogas under Hydrogen- and Oxygen-Enriched Condition," Energies, MDPI, vol. 10(8), pages 1-11, August.
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    Cited by:

    1. Dong, Ming & Cui, Jinglong & Jia, Ming & Shang, Yan & Li, Sufen, 2020. "Large eddy simulation of plasma-assisted ignition and combustion in a coaxial jet combustor," Energy, Elsevier, vol. 199(C).

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