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LES Simulation of a Model Gas-Turbine Lean Combustor: Impact of Coherent Flow Structures on the Temperature Field and Concentration of CO and NO

Author

Listed:
  • Leonid M. Chikishev

    (Kutateladze Institute of Thermophysics, 1 Lavrentyev Avenue, 630090 Novosibirsk, Russia
    Department of Physics, Novosibirsk State University, 1 Pirogov Street, 630090 Novosibirsk, Russia)

  • Dmitriy K. Sharaborin

    (Kutateladze Institute of Thermophysics, 1 Lavrentyev Avenue, 630090 Novosibirsk, Russia
    Department of Physics, Novosibirsk State University, 1 Pirogov Street, 630090 Novosibirsk, Russia)

  • Aleksei S. Lobasov

    (Kutateladze Institute of Thermophysics, 1 Lavrentyev Avenue, 630090 Novosibirsk, Russia
    Department of Physics, Novosibirsk State University, 1 Pirogov Street, 630090 Novosibirsk, Russia)

  • Artem A. Dekterev

    (Kutateladze Institute of Thermophysics, 1 Lavrentyev Avenue, 630090 Novosibirsk, Russia)

  • Roman V. Tolstoguzov

    (Kutateladze Institute of Thermophysics, 1 Lavrentyev Avenue, 630090 Novosibirsk, Russia
    Department of Physics, Novosibirsk State University, 1 Pirogov Street, 630090 Novosibirsk, Russia)

  • Vladimir M. Dulin

    (Kutateladze Institute of Thermophysics, 1 Lavrentyev Avenue, 630090 Novosibirsk, Russia
    Department of Physics, Novosibirsk State University, 1 Pirogov Street, 630090 Novosibirsk, Russia)

  • Dmitriy M. Markovich

    (Kutateladze Institute of Thermophysics, 1 Lavrentyev Avenue, 630090 Novosibirsk, Russia
    Department of Physics, Novosibirsk State University, 1 Pirogov Street, 630090 Novosibirsk, Russia)

Abstract

The present paper reports on the numerical simulation of flow dynamics in a model gas-turbine combustor by large eddy simulation in order to evaluate the effect of coherent flow structures on the local fluctuations of gas temperature and local concentrations of NO and CO. The simulations were performed for a generic swirler, based on the design by Turbomeca, for a Reynolds number of 15,000 at normal and elevated inlet temperature and pressure (up to 500 K and 3.4 atm). The simulation data were validated based on the velocity measurements by stereoscopic particle image velocimetry. In order to reveal coherent flow structures, the velocity snapshots were processed by the proper orthogonal method. The temporal coefficients of the decomposition were used to evaluate the conditional sampled spatial distributions of the temperature and species concentration. It is shown that the coherent fluctuations of temperature can locally reach up to 200 K with the fluctuations of NO up to 20%. Thus, the results demonstrate that coherent flow structures in a lean swirl combustor can sufficiently contribute to NOx emission.

Suggested Citation

  • Leonid M. Chikishev & Dmitriy K. Sharaborin & Aleksei S. Lobasov & Artem A. Dekterev & Roman V. Tolstoguzov & Vladimir M. Dulin & Dmitriy M. Markovich, 2022. "LES Simulation of a Model Gas-Turbine Lean Combustor: Impact of Coherent Flow Structures on the Temperature Field and Concentration of CO and NO," Energies, MDPI, vol. 15(12), pages 1-26, June.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:12:p:4362-:d:839235
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    References listed on IDEAS

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    1. Vladimir Dulin & Leonid Chikishev & Dmitriy Sharaborin & Aleksei Lobasov & Roman Tolstoguzov & Zundi Liu & Xiaoxiang Shi & Yuyang Li & Dmitriy Markovich, 2021. "On the Flow Structure and Dynamics of Methane and Syngas Lean Flames in a Model Gas-Turbine Combustor," Energies, MDPI, vol. 14(24), pages 1-20, December.
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    Cited by:

    1. Yang Ding & Jiangang Hao & Anqi Li & Xuhuai Wang & Xiang Zhang & Yong Liu, 2022. "Numerical Simulation of Combustion and Emission Characteristics during Gas Turbine Startup Procedure," Energies, MDPI, vol. 15(15), pages 1-17, July.

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