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Advances in Thermodynamic and Combustion Instability Analysis of Gas Turbine Combustor

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "I2: Energy and Combustion Science".

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 995

Special Issue Editors


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Guest Editor
Agency for Defense Development, Daejeon 34186, Republic of Korea
Interests: gas turbine combustor; combustion instability; flame transfer function; laser diagnostics; machine learning; data science

E-Mail Website
Guest Editor
Agency for Defense Development, Daejeon 34186, Republic of Korea
Interests: pinch-off flame; diffusion flame; flame structure; laser diagnostics

Special Issue Information

Dear Colleagues,

Gas turbines are popular due to the availability of various renewable and alternative fuels such as synthetic gas (composed of H2 and CO) and synthetic natural gas (composed of H2 and CH4), as well as conventional fuels such as natural gas and diesel fuel. Lean premixed gas turbine combustors have been known to be effective in minimizing pollutant exhaust gases such as NOx, and are extensively employed in aviation and industrial energy production systems because they offer relatively high efficiency compared with diffusion burners. However, premixed combustors may cause gas turbine components to experience the flash-back of flame and combustion instability, which are issues that have been studied by various research groups in recent decades.

Several effective approaches have been proposed to overcome these problems. One of these approaches is renewable energy, which can contribute significantly to a reduction in exhaust emissions. Some reliable, eco-friendly renewable energy sources have reached technical maturity, such as solar, wind, and tidal energy. However, the efficacy of renewable energy is heavily dependent on nature. In addition, energy conversion and energy storage can be problematic. Another approach is a technological innovation that ensures energy security without generating emissions; coal to natural gas or synthetic gas technologies have been developed for application in several commercial plants. Advanced combustion techniques with enhanced efficiency in gas turbine applications have also been studied by many researchers.

This Special Issue aims to investigate research on combustion instability for the stable operation of gas turbines and various burners and various methods that may be utilized to achieve carbon neutrality in gas turbine societies.

Dr. Seongpil Joo
Dr. Myunggeun Ahn
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • gas turbine combustor
  • combustion instability
  • flame transfer function
  • laser diagnostics
  • machine learning
  • data science
  • diffusion Flame
  • hydrogen fuel
  • carbon neutralization
  • NOx emission

Published Papers (1 paper)

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Research

11 pages, 1273 KiB  
Article
Analysis of the Exothermic Reaction of Flame Ignition in the Combustion Chamber of a Gas Turbine Unit
by Sergej Maspanov, Igor Bogov, Svetlana Martynenko and Vladimir Sukhanov
Energies 2023, 16(21), 7395; https://doi.org/10.3390/en16217395 - 1 Nov 2023
Cited by 1 | Viewed by 807
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 [...] Read more.
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 (λOC)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. Full article
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