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Aerothermal Performance and Soot Emissions of Reacting Flow in a Micro-Gas Turbine Combustor

Author

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  • Heyu Wang

    (Mechanical Engineering Department, Faculty of Engineering Sciences, University College London, London WC1E 7JE, UK)

  • Kai Hong Luo

    (Mechanical Engineering Department, Faculty of Engineering Sciences, University College London, London WC1E 7JE, UK)

Abstract

Micro-gas turbines are used for power generation and propulsion in unmanned aerial vehicles. Despite the growing demand for electric engines in a world striving for a net zero carbon footprint, combustion gas turbines will continue to play a critical role. Hence, there is a need for improved micro-gas turbines that can meet stringent environmental regulations. This paper is the first part of a comprehensive study focused on understanding the fundamental performance and emission characteristics of a micro-gas turbine model, with the aim of finding ways to enhance its operation. The study used a multidisciplinary CFD model to simulate the reacting flow in the combustion chamber and validated the results against experimental data and throughflow simulations. The present work is one of the few work that attempts to address both the aerothermal performance and emissions of the gas turbine. The findings highlight that parameters such as non-uniform outlet pressure, fuel-to-air ratio, and fuel injection velocity can greatly influence the performance and emissions of the micro-gas turbine. These parameters can affect the combustion efficiency, the formation of hot spots at the combustor–turbine interface, and the soot emissions. The results provide valuable insights for optimizing the performance and reducing the emissions of micro-gas turbines and serve as a foundation for further research into the interaction between the combustor and the turbine.

Suggested Citation

  • Heyu Wang & Kai Hong Luo, 2023. "Aerothermal Performance and Soot Emissions of Reacting Flow in a Micro-Gas Turbine Combustor," Energies, MDPI, vol. 16(7), pages 1-19, March.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:7:p:2947-:d:1105498
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    References listed on IDEAS

    as
    1. Roberto Capata & Matteo Saracchini, 2018. "Experimental Campaign Tests on Ultra Micro Gas Turbines, Fuel Supply Comparison and Optimization," Energies, MDPI, vol. 11(4), pages 1-17, March.
    2. Zong, Chao & Ji, Chenzhen & Cheng, Jiaying & Zhu, Tong & Guo, Desan & Li, Chengqin & Duan, Fei, 2022. "Toward off-design loads: Investigations on combustion and emissions characteristics of a micro gas turbine combustor by external combustion-air adjustments," Energy, Elsevier, vol. 253(C).
    3. Roberta De Robbio, 2023. "Micro Gas Turbine Role in Distributed Generation with Renewable Energy Sources," Energies, MDPI, vol. 16(2), pages 1-37, January.
    4. Reyhaneh Banihabib & Mohsen Assadi, 2022. "The Role of Micro Gas Turbines in Energy Transition," Energies, MDPI, vol. 15(21), pages 1-22, October.
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    Cited by:

    1. Heyu Wang & Kai Hong Luo, 2024. "Fully Coupled Whole-Annulus Investigation of Combustor–Turbine Interaction with Reacting Flow," Energies, MDPI, vol. 17(4), pages 1-21, February.

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