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Interdisciplinary Researches for Combustion Theory

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Applied Thermal Engineering".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 13383

Special Issue Editors


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Guest Editor
Research School of High-Energy Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russian
Interests: fuels; combustion chemistry; waste to energy; thermal power engineering; environmental performance
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Heat Mass Transfer Laboratory, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
Interests: heat and mass transfer; micro-explosion; puffing; combustion; numerical simulation; multicomponent fuels

Special Issue Information

Dear Colleagues,

Combustion theory plays an important role in industry and everyday life. It covers a wide range of aspects, from thermal energy generation to destructive fires. The widely known traditional approaches to the study of typical combustion processes have practically exhausted their potential. Therefore, a promising direction in the development of modern provisions of the combustion theory is the interdisciplinarity of experimental and theoretical studies.

As before, within all practical applications of combustion theory, the main aim is to achieve relatively high efficiency in terms of energy, economy, and environmental pollution. 

This Special Issue will be dedicated to new interdisciplinary approaches and combustion theory results. Subjects that will be discussed in this Special Issue will not only focus on traditional hydrocarbon fuels and methods of their combustion, but also on the advanced multi-component fuel compositions and perspective methods of their ignition and combustion in relation to power-generating plants for various purposes.

Dr. Dmitrii O. Glushkov
Dr. Dmitriy V. Antonov
Guest Editors

Manuscript Submission Information

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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 2400 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

  • fuel
  • combustion
  • physico-chemical regularities
  • emission
  • experiment
  • numerical simulation
  • practical application
  • engine
  • boile
  • combustion chamber

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Published Papers (3 papers)

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Research

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12 pages, 4677 KiB  
Article
Unsteady Combustion of the Heptane-in-Water Emulsion Foamed with Hydrogen–Oxygen Mixture
by Alexey Kiverin and Ivan Yakovenko
Appl. Sci. 2023, 13(8), 4829; https://doi.org/10.3390/app13084829 - 12 Apr 2023
Cited by 1 | Viewed by 1462
Abstract
This research paper numerically studies how hydrocarbon additives affect hydrogen combustion in the process of complex fuel burning on the example of the combustible foam representing the heptane-in-water emulsion foamed with a hydrogen–oxygen mixture. It is demonstrated that the two-phase hydrodynamic model with [...] Read more.
This research paper numerically studies how hydrocarbon additives affect hydrogen combustion in the process of complex fuel burning on the example of the combustible foam representing the heptane-in-water emulsion foamed with a hydrogen–oxygen mixture. It is demonstrated that the two-phase hydrodynamic model with an account of foam structure and chemical kinetics reproduces quite accurately, at least at the qualitative level, the experimentally observed features of foamed emulsion combustion. Due to this, it is concluded that a proposed model can be fruitfully used for the interpretation of the combustion features observed in such a complex combined fuel. Based on the obtained numerical data, it is found that there are two main possibilities related to the hydrogen–hydrocarbon chemistry interactions. In the case of near-stoichiometric, hydrocarbons act mainly as an inhibitor of hydrogen combustion; however, for lean hydrogen–oxygen mixtures, flame propagation is determined by the joint hydrocarbon and hydrogen oxidation kinetics. Herewith, the hydrocarbon burns together with the hydrogen inside the flame front in the case of slow combustion, while in the case of high-speed combustion, hydrogen oxidation kinetics becomes predominant, and hydrocarbons evaporate and burn behind the flame front, causing a lesser effect on the flame dynamics. Full article
(This article belongs to the Special Issue Interdisciplinary Researches for Combustion Theory)
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20 pages, 4342 KiB  
Article
Experimental Research of the Initial Temperature and Additives Effect on the Ignition and Combustion Mechanisms of Composite Liquid Fuel in a High-Temperature Oxidizer
by Dmitrii Glushkov, Dmitrii Klepikov, Aleksandr Nigay, Kristina Paushkina and Andrei Pleshko
Appl. Sci. 2023, 13(6), 3501; https://doi.org/10.3390/app13063501 - 9 Mar 2023
Viewed by 2130
Abstract
Composite fuel is a promising energy source that allows for solving the problems of waste disposal with energy generation. Such fuel is the most accessible fuel and is cheap in comparison with fossil fuels widely used in industrial thermal power engineering. This paper [...] Read more.
Composite fuel is a promising energy source that allows for solving the problems of waste disposal with energy generation. Such fuel is the most accessible fuel and is cheap in comparison with fossil fuels widely used in industrial thermal power engineering. This paper presents the results of experimental studies on the effect of the initial temperature and the addition of combustible liquids and solid components on the ignition characteristics of composite fuel single droplets. Composite liquid fuels were prepared using the main components: bituminous coal, coal processing waste (filter cake), rapeseed oil, turbine oil, and water. The research was carried out for fuel droplets with an initial temperature from −60 to +60 and an ambient temperature from 700 to 1000 °C. The differences in the ignition delay times at conditions close to the limiting ones were 2–3.5 times. A promising direction for intensifying the processes of the ignition and combustion of composite liquid fuels under relatively intense heating is self-grinding into a large number of small fragments up to complete disintegration due to the dispersion effect. It has been experimentally found that the addition of highly flammable liquids (gasoline, kerosene, diesel fuel, formic acid) to the fuel composition in an amount of 5% is characterized by an intensification of ignition and burnout of droplets by about two times. The ignition delay time is reduced by 20–40%, while the size of the dispersion area is increased by 20–70%. The addition of formic acid to the composite fuel has a positive effect on the main ignition characteristics from 5 to 50%, and the addition of a similar amount of diesel fuel by 20–64%. Full article
(This article belongs to the Special Issue Interdisciplinary Researches for Combustion Theory)
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Review

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27 pages, 11320 KiB  
Review
Physical and Chemical Features of Hydrogen Combustion and Their Influence on the Characteristics of Gas Turbine Combustion Chambers
by Elena Anatolievna Shchepakina, Ivan Alexandrovich Zubrilin, Alexey Yurievich Kuznetsov, Konstantin Dmitrievich Tsapenkov, Dmitry Vladimirovich Antonov, Pavel Alexandrovich Strizhak, Denis Vladimirovich Yakushkin, Alexander Gennadievich Ulitichev, Vladimir Alexandrovich Dolinskiy and Mario Hernandez Morales
Appl. Sci. 2023, 13(6), 3754; https://doi.org/10.3390/app13063754 - 15 Mar 2023
Cited by 23 | Viewed by 8931
Abstract
Hydrogen plays a key role in the transition to a carbon-free economy. Substitution of hydrocarbon fuel with hydrogen in gas turbine engines and power plants is an area of growing interest. This review discusses the combustion features of adding hydrogen as well as [...] Read more.
Hydrogen plays a key role in the transition to a carbon-free economy. Substitution of hydrocarbon fuel with hydrogen in gas turbine engines and power plants is an area of growing interest. This review discusses the combustion features of adding hydrogen as well as its influence on the characteristics of gas turbine combustion chambers as compared with methane. The paper presents the studies into pure hydrogen or methane and methane–hydrogen mixtures with various hydrogen contents. Hydrogen combustion shows a smaller ignition delay time and higher laminar flame speed with a shift in its maximum value to a rich mixture, which has a significant effect on the flashback inside the burner premixer, especially at elevated air temperatures. Another feature is an increased temperature of the flame, which can lead to an increased rate of nitrogen oxide formation. However, wider combustion concentration ranges contribute to the stable combustion of hydrogen at temperatures lower than those of methane. Along with this, it has been shown that even at the same adiabatic temperature, more nitrogen oxides are formed in a hydrogen flame than in a methane flame, which indicates another mechanism for NOx formation in addition to the Zeldovich mechanism. The article also summarizes some of the results of the studies into the effects of hydrogen on thermoacoustic instability, which depends on the inherent nature of pulsations during methane combustion. The presented data will be useful both to engineers who are engaged in solving the problems of designing hydrogen combustion devices and to scientists in this field of study. Full article
(This article belongs to the Special Issue Interdisciplinary Researches for Combustion Theory)
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