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Applied Sciences
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The Ignition Phenomena of the Composite Liquid Fuels
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The Ignition Phenomena of the Composite Liquid Fuels

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Energy Science and Technology".

Deadline for manuscript submissions: closed (31 October 2020) | Viewed by 3173

Special Issue Editor

Dr. Roman Igorevich Egorov

E-Mail Website
Guest Editor
Tomsk Polytechnic University, Tomsk, Russia
Interests: thermodynamics; ignition and combustion phenomena; heat and mass transfer; laser physics

Special Issue Information

Dear Colleagues,

The numerous energy crises of the last few decades have attracted a lot of attention to oil, natural and liquid gas, and even nuclear fuel. However, coal is still the most popular fuel, and the use of raw materials in heavy industry has remained an oversight. In spite of the continuing efforts of the Chinese government to decrease coal consumption, coal is still the foundation of the energy use in one of the most successful economies in the world. The same is true for several other countries as well.

The use of coal (as well as peat, lignite, and other fossil fuels) is associated with massive production of exhaust. The development of new, effective combustion techniques has led the scientific community to use water as an important, ecologically friendly addition to the process of coal combustion. It allows for the moderation of combustion temperature together with the addition of certain thermo-chemical reactions that result in better composition of exhausts as well as an extension of the life cycle of the energy infrastructure. However, the ignition of such water-filled compositions becomes complicated due to the essential decrease of the fuel reactivity.

The ignition phenomena of the liquid and quasi-liquid fuel compositions containing sufficient amounts of water have attracted the attention of scientists and engineers working in different areas. Water–fuel emulsions promise a new level of fuel atomization efficiency for diesel engines. The mixture of combustible industrial waste with water, as well as different quasi-liquid mixtures with the inclusion of renewable components, demonstrates beneficial ecological and energy properties.

The aim of this Special Issue is to gather scientific papers about fuel ignition phenomena, collecting a wide and comprehensive review of the popular trends in theoretical and practical investigations of the influence of water on the ignition of composite liquid fuels. Topics may include, but are not limited to, the following:

  • Rheological and thermodynamical properties of mixtures of solid fuels with water and other liquids;
  • Ignition of water-filled compositions of industrial and domestic waste;
  • Features of atomization of composite liquid fuels for optimal ignition;
  • The effects of water on the properties of fuel emulsions during heating;
  • Thermo-chemical transformations of fuel components accompanying ignition;
  • Phase transitions during ignition phenomena;
  • Ignition of volatiles and heterogeneous ignition of composite fuels;
  • Different ignition techniques for composite fuels.

Dr. Roman Igorevich Egorov
Guest Editor

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. Applied Sciences 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 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

  • Inductive ignition
  • Composite liquid fuels
  • Coal–water slurry
  • Fuel water emulsions
  • Waste-derived fuels
  • Water-induced effects at ignition
  • Evaporation
  • Pyrolysis
  • Gasification
  • Ignition techniques

Published Papers (2 papers)

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Research

28 pages, 19394 KiB  
Article
Scaling Turbulent Combustion Fields in Explosions
by Allen Kuhl, David Grote and John Bell
Appl. Sci. 2020, 10(23), 8577; https://doi.org/10.3390/app10238577 - 30 Nov 2020
Cited by 3 | Viewed by 1498
Abstract
We considered the topic of explosions from spherical high-explosive (HE) charges. We studied how the turbulent combustion fields scale. On the basis of theories of dimensional analysis by Bridgman and similarity theories of Sedov and Barenblatt, we found that all fields scaled with [...] Read more.
We considered the topic of explosions from spherical high-explosive (HE) charges. We studied how the turbulent combustion fields scale. On the basis of theories of dimensional analysis by Bridgman and similarity theories of Sedov and Barenblatt, we found that all fields scaled with the explosion length scale r0. This included the blast wave, the mean and root mean squared (RMS) profiles of thermodynamic variables, combustion variables, velocities, vorticity, and turbulent Reynolds stresses. This was a consequence of the formulation of the problem and our numerical method, which both satisfied the similarity conditions of Sedov. We performed numerical simulations of 1 g charges and 1 kg charges; the solutions were identical (within roundoff error) when plotted in scaled variables. We also explored scaling laws related to three-phase pyrotechnic explosions. We show that although the scaling formally broke down, the fireball still essentially scaled with the explosion length scale r0. However, the discrete Lagrange particles (DLP) (phase 2) and the heterogeneous continuum model (HCM) of the DLP wakes (phase 3) did not scale with r0, and mean and RMS profiles could differ by a factor of 10 in some regions. This was because the DLP particles and wakes introduced an additional scale that broke the similarity conditions. Full article
(This article belongs to the Special Issue The Ignition Phenomena of the Composite Liquid Fuels)
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11 pages, 1696 KiB  
Article
Effect of the Addition of Petrochemicals onto the Atomization and Ignition of the Coal-Water Slurry Prepared from the Wastes
by Roman I. Taburchinov, Maxim V. Belonogov and Roman I. Egorov
Appl. Sci. 2020, 10(23), 8574; https://doi.org/10.3390/app10238574 - 30 Nov 2020
Cited by 1 | Viewed by 1396
Abstract
The composite quasi-liquid fuels made of different industrial waste become more and more attractive for scientists during last years. Coal-water slurry is one of the popular types of such compositions. Addition of the waste petrochemicals into the slurry allows decrease of the ignition [...] Read more.
The composite quasi-liquid fuels made of different industrial waste become more and more attractive for scientists during last years. Coal-water slurry is one of the popular types of such compositions. Addition of the waste petrochemicals into the slurry allows decrease of the ignition delays of such composite for up to 27%. However, it has a non-trivial effect onto the atomization dynamics of the slurry making the size and velocity distributions of the aerosol more stable during propagation of the aerosol cloud. This, in turn, leads to more predictable ignition and combustion of the aerosol. Full article
(This article belongs to the Special Issue The Ignition Phenomena of the Composite Liquid Fuels)
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