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Analysis of the Exothermic Reaction of Flame Ignition in the Combustion Chamber of a Gas Turbine Unit

Author

Listed:
  • Sergej Maspanov

    (Higher School of Power Engineering, Institute of Energy, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia)

  • Igor Bogov

    (Department of Ship Turbines and Turbine Installations, Faculty of Ship Power Engineering and Automation, State Marine Technical University of St. Petersburg, 190121 St. Petersburg, Russia)

  • Svetlana Martynenko

    (Department of Machines and Apparatus, Mechanical Faculty, Belarusian State University of Food and Chemical Technologies, 212027 Mogilev, Belarus)

  • Vladimir Sukhanov

    (Higher School of Power Engineering, Institute of Energy, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia)

Abstract

This article analyses the exothermic reaction of flame ignition in the combustion chamber of a gas turbine unit, which is characteristic of combustion chambers operating on traditional hydrocarbon fuels. The combustion of gases as an explosive process in confined and semi-enclosed areas remains a poorly understood section of thermal physics. Without a detailed review of the physical and chemical processes taking place in the combustion chamber, it cannot be said whether the gas turbine unit will run sustainably. It is also important to know what combustion modes are in principle possible after a loss of stability in the combustion chamber in order to take action against this in advance. To describe flame ignition and quenching in the flow of the fuel–air mixture through a combustion chamber, a system of differential conservation equations of energy and reactive species supplemented with the equation of state is used. Nonstationary combustion processes in gas-turbine engines were studied, and flame ignition and blow-off were determined by the heat balance and by the continuity of chemical processes. Calculation methodologies for various operating modes of the combustion chamber of a gas turbine unit are developed and realized. The results of the calculations that were carried out are presented with graphical interpretation and with their analysis provided in sufficient detail. Based on this analysis, recommendations are then provided. From the graphs, it can be observed that the combustion chamber of a gas turbine unit reaches its maximum limit of stable operation at the optimum value of the reduced flow velocity in the openings of the air supply to the combustion and the mixing zones of the flame tube (λ OC ) opt = 0.22 when the fuel–air mixture is at maximum depletion, ensuring that combustion does not stop and flame failure does not occur. The topic of this article relates to the intensification of hydrocarbon fuel combustion and the technological improvement of combustion chambers in gas turbine units. This topic is of exceptional importance and relevance, emphasizing its significance. The purpose of this work is to develop and implement a methodology for calculating various modes of operation of the combustion chamber of a gas turbine unit.

Suggested Citation

  • Sergej Maspanov & Igor Bogov & Svetlana Martynenko & Vladimir Sukhanov, 2023. "Analysis of the Exothermic Reaction of Flame Ignition in the Combustion Chamber of a Gas Turbine Unit," Energies, MDPI, vol. 16(21), pages 1-11, November.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:21:p:7395-:d:1272499
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    References listed on IDEAS

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    1. K. M. Akkoli & N. R. Banapurmath & Suresh G & Manzoore Elahi M. Soudagar & T. M. Yunus Khan & Maughal Ahmed Ali Baig & M. A. Mujtaba & Nazia Hossain & Kiran Shahapurkar & Ashraf Elfasakhany & Mishal A, 2021. "Effect of Producer Gas from Redgram Stalk and Combustion Chamber Types on the Emission and Performance Characteristics of Diesel Engine," Energies, MDPI, vol. 14(18), pages 1-17, September.
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