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Assessment of Global and Detailed Chemical Kinetics in Supercritical Combustion for Hydrogen Gas Turbines

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  • Sylwia Oleś

    (Department of Thermal and Fluid Engineering, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands)

  • Jakub Mularski

    (Department of Mechanics, Machines, Devices and Energy Processes, Wrocław University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wrocław, Poland)

  • Halina Pawlak-Kruczek

    (Department of Mechanics, Machines, Devices and Energy Processes, Wrocław University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wrocław, Poland)

  • Abhishek K. Singh

    (Department of Thermal and Fluid Engineering, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands)

  • Artur Pozarlik

    (Department of Thermal and Fluid Engineering, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands)

Abstract

Supercritical combustion is a promising technique for improving the efficiency and reducing the emissions of next-generation gas turbines. However, accurately modeling combustion under these conditions remains a challenge, particularly due to the complexity of chemical kinetics. This study aims to evaluate the applicability of a reduced global reaction mechanism compared to the detailed Foundational Fuel Chemistry Model 1.0 (FFCM-1) when performing hydrogen combustion with supercritical carbon dioxide and argon as diluents. Computational fluid dynamics simulations were conducted in two geometries: a simplified tube for isolating chemical effects and a combustor with cooling channels for practical evaluation. The analysis focuses on the evaluation of velocity, temperature, and the water vapor mass fraction distributions inside the combustion chamber. The results indicate good agreement between the global and detailed mechanisms, with average relative errors below 2% for supercritical argon and 4% for supercritical carbon dioxide. Both models captured key combustion behaviors, including buoyancy-driven flame asymmetry caused by the high density of supercritical fluids. The findings suggest that global chemistry models can serve as efficient tools for simulating supercritical combustion processes, making them valuable for the design and optimization of future supercritical gas turbine systems.

Suggested Citation

  • Sylwia Oleś & Jakub Mularski & Halina Pawlak-Kruczek & Abhishek K. Singh & Artur Pozarlik, 2025. "Assessment of Global and Detailed Chemical Kinetics in Supercritical Combustion for Hydrogen Gas Turbines," Energies, MDPI, vol. 18(13), pages 1-13, June.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:13:p:3380-:d:1688891
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    References listed on IDEAS

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    1. Fabrizio Reale, 2023. "The Allam Cycle: A Review of Numerical Modeling Approaches," Energies, MDPI, vol. 16(22), pages 1-22, November.
    2. Jin, Shaoye & Deng, Jun & Xie, Kaien & Liang, Xinghu & Wang, Chenxu & Ding, Weiqi & Li, Liguang, 2023. "Knock control in hydrogen-fueled argon power cycle engine with higher compression ratio by water port injection," Applied Energy, Elsevier, vol. 349(C).
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