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Energies
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Advances and Advantages in CFD Analysis of Gas Turbine Combustors
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Advances and Advantages in CFD Analysis of Gas Turbine Combustors

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "J: Thermal Management".

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 10256

Special Issue Editors

Prof. Dr. Raffaele Tuccillo

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Guest Editor
Department of Industrial Engineering, University of Naples “Federico II”, 80138 Naples, Italy
Interests: combustion; fuels; diesel engine; hydrogen; combustor; energy and propulsion systems; turbomachinery; unsteady flows; CFD; optimization methods
Special Issues, Collections and Topics in MDPI journals
Dr. Fabrizio Reale

E-Mail Website
Guest Editor
Institute of Sciences and Technologies for Sustainable Energy and Mobility, STEMS-CNR, Via Marconi 4, 80125 Naples, Italy
Interests: numerical modelling of waste heat recovery; integrated energy systems based on gas turbines; organic rankine cycles; supercritical CO2 gas turbines; micro gas turbines fuelled with biofuels or hydrogen–methane blends; 3D CFD modelling of water–oil mixtures in microchannels
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

CFD analysis is a good method to study in depth the combustion processes inside a gas turbine combustor without excess in experimental effort. In this way, the research activity can examine the typical structural limits of commercial combustion chambers in order to extend their operative range. CFD analysis allows analyzing the effects of any modification or new design with an acceptable cost.

For these reasons, a Special Issue focused on the advantages of computational fluid–dynamic analysis in gas turbine combustion can be conducted on two parallel tracks: the aim and the tool. Accordingly, the topics of interest may include research focused both on the models that could be implemented and on fields for which CFD analysis can be used. The Special Issue will explore—but not be limited to—the topics of combustion of alternative fuels, i.e., hydrogen, hydrogen–methane blends, biogas, syngas or ammonia, interaction between combustor and turbine, and anomalies of combustion. Topics of interest may also include studies on flashback, combustion instabilities, combustion chamber design (i.e., lean premixed, RQL, annular, tubular), and combustion strategies and technical solutions (i.e., water/steam injection, sequential combustion, split fuel injection or staged combustion).

Prof. Dr. Raffaele Tuccillo
Dr. Fabrizio Reale
Guest Editors

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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

  • CFD analysis
  • Computational fluid dynamics
  • Gas turbines
  • Gas turbine combustors
  • Combustion chambers
  • Hydrogen combustion
  • Combustors
  • Biofuels
  • Steam injection

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Published Papers (2 papers)

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20 pages, 10047 KB  
Article
Combustion Characterization in a Diffusive Gas Turbine Burner for Hydrogen-Compliant Applications
by Salvatore Carusotto, Prashant Goel, Mirko Baratta, Daniela Anna Misul, Simone Salvadori, Francesco Cardile, Luca Forno, Marco Toppino and Massimo Valsania
Energies 2022, 15(11), 4117; https://doi.org/10.3390/en15114117 - 3 Jun 2022
Cited by 20 | Viewed by 4881
Abstract
The target of net-zero emissions set by the 2015 Paris Agreement has strongly commissioned the energy production sector to promote decarbonization, renewable sources exploitation, and systems efficiency. In this framework, the utilization of hydrogen as a long-term energy carrier has great potential. This [...] Read more.
The target of net-zero emissions set by the 2015 Paris Agreement has strongly commissioned the energy production sector to promote decarbonization, renewable sources exploitation, and systems efficiency. In this framework, the utilization of hydrogen as a long-term energy carrier has great potential. This paper is concerned with the combustion characterization in a non-premixed gas turbine burner, originally designed for natural gas, when it is fed with NG-H2 blends featuring hydrogen content from 0 to 50% in volume. The final aim is to retrofit a 40 MW gas turbine. Starting from the operational data of the engine, a CFD model of the steady-state combustion process has been developed, with reference to the base load NG conditions, by reducing the fuel mass-flow rate by up to 17% to target the baseline turbine inlet temperature. When the fuel is blended with hydrogen, for a given temperature at turbine inlet, an increase in the peak temperature up to 800 K is obtained, if no countermeasures are taken. Furthermore, the flame results are more intense and closer to the injector in the case of hydrogen blending. The results of this work hint at the necessity of carefully analyzing the possible NOx compensation strategies, as well as the increased thermal stresses on the injector. Full article
(This article belongs to the Special Issue Advances and Advantages in CFD Analysis of Gas Turbine Combustors)
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15 pages, 6228 KB  
Article
Effects of Steam Injection on the Permissible Hydrogen Content and Gaseous Emissions in a Micro Gas Turbine Supplied by a Mixture of CH4 and H2: A CFD Analysis
by Fabrizio Reale
Energies 2022, 15(8), 2914; https://doi.org/10.3390/en15082914 - 15 Apr 2022
Cited by 11 | Viewed by 4147
Abstract
The use of hydrogen in small scale gas turbines is currently limited by several issues. Blending hydrogen with methane or other gaseous fuels can be considered a low medium-term viable solution, with the goal of reducing greenhouse gas emissions. In fact, only small [...] Read more.
The use of hydrogen in small scale gas turbines is currently limited by several issues. Blending hydrogen with methane or other gaseous fuels can be considered a low medium-term viable solution, with the goal of reducing greenhouse gas emissions. In fact, only small amounts can be mixed with methane in premixed combustors, due to the risk of flashback. The aim of this article is to investigate the injection of small quantities of steam as a method of increasing the maximum permissible hydrogen content in a mixture with methane. The proposed approach involves introducing the steam directly into the combustion chamber into the main fuel feeding system of a Turbec T100. The study is carried out by means of CFD analysis of the combustion process. A thermodynamic analysis of the energy system is used to determine boundary conditions. The combustion chamber is discretized using a three-dimensional mesh consisting of 4.7 million nodes and the RANS RSM model is used to simulate the effects of turbulence. The results show that the addition of steam may triple the permissible percentage of hydrogen in the mixture for the considered MGT, passing from 10% to over 30% by volume, also leading to a reduction in NOx emissions without a significant variation in CO emissions. Full article
(This article belongs to the Special Issue Advances and Advantages in CFD Analysis of Gas Turbine Combustors)
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