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Energies
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Fuel Technology in Aviation and Aerospace
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Fuel Technology in Aviation and Aerospace

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "I1: Fuel".

Deadline for manuscript submissions: closed (26 May 2022) | Viewed by 4367

Special Issue Editor

Prof. Dr. Ling-yun Hou

E-Mail Website
Guest Editor
School of Aerospace Engineering, Tsinghua University, Beijing 100084, China
Interests: fuel and combustion; fuel cooling; active thermal protection; advanced combined engine system

Special Issue Information

Dear Colleagues, 

The rapid developments seen in the aeronautic and aerospace sector result in an innovation challenge for fuel technology. Fuel serves not only as the supply source of combustion, but also as a coolant onboard, meeting the high heat-flux requirements of high-speed flight vehicles. Pollutant emission is also closely related to fuels. As such, the development of fuel technology is in principle an important factor with the ability to greatly influence future trends in the aviation and aerospace fields.

This Special Issue of Energies focuses on future fuel technology in aviation and aerospace. Specifically, it highlights the thermophysical property, combustion, and heat transfer aspects of this topic, as well as thermal cracking and coke formation. Additional aspects of interest are emissions and next-generation fuel systems. Papers addressing any of these specific topics are welcome.

Prof. Dr. Ling-yun Hou
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. 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

  • thermophysical property
  • combustion
  • heat transfer
  • thermal cracking
  • coke
  • emission
  • fuel system

Published Papers (2 papers)

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Research

16 pages, 10668 KiB  
Article
Pressure Effect on the Surface Deposition of Aviation Fuel in a Heat Exchange Tube
by Zekun Zheng, Xinyan Pei, Yafen Wang and Lingyun Hou
Energies 2022, 15(18), 6770; https://doi.org/10.3390/en15186770 - 16 Sep 2022
Cited by 2 | Viewed by 1301
Abstract
The surface deposition of aviation fuel is a crucial and challenging issue in the application of air-to-fuel heat exchangers in aero-engines. The present study investigated the effect of pressure on the surface deposition of aviation fuel in a horizontal tube. Surface deposition distributions [...] Read more.
The surface deposition of aviation fuel is a crucial and challenging issue in the application of air-to-fuel heat exchangers in aero-engines. The present study investigated the effect of pressure on the surface deposition of aviation fuel in a horizontal tube. Surface deposition distributions of aviation fuel RP-3 under different pressures (from 1.5 to 5.5 MPa) and different heat fluxes (from 0.08 to 0.4 MW/m2) were measured. Some experimental cases were numerically simulated to analyze the intrinsic mechanism of pressure affecting deposit formation. It was shown that pressure affects oxidative and pyrolytic deposition differently. Elevated pressure promotes the formation of pyrolytic deposits, whereas the oxidative deposition rate increases as pressure decreases. Pressure affects surface deposit formation via the physical properties of aviation fuel, especially density. The phase transition of fuel from liquid to vapor greatly accelerates the precipitation and deposition of insoluble substances under subcritical pressure. The deposition acceleration mechanism caused by the radial density gradient also plays a role under supercritical pressures, especially when pressure approaches the critical value. In addition, surface deposition depends more strongly on wall temperature than on bulk temperature. Full article
(This article belongs to the Special Issue Fuel Technology in Aviation and Aerospace)
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11 pages, 3611 KiB  
Article
Laminar Burning Speed of Aviation Kerosene at Low Pressures
by Jian Liu, Dingrui Zhang, Lingyun Hou, Jinhu Yang and Gang Xu
Energies 2022, 15(6), 2191; https://doi.org/10.3390/en15062191 - 17 Mar 2022
Cited by 2 | Viewed by 2681
Abstract
Aero-engine combustors may experience extreme low pressures in the case of an in-flight shutdown, which makes the study of aviation kerosene flame propagation characteristics at low pressures important. The present work examined flame propagation during the combustion of aviation kerosene over the pressure [...] Read more.
Aero-engine combustors may experience extreme low pressures in the case of an in-flight shutdown, which makes the study of aviation kerosene flame propagation characteristics at low pressures important. The present work examined flame propagation during the combustion of aviation kerosene over the pressure range from 25 to 100 kPa using a constant-volume bomb apparatus. The laminar burning speeds at different initial pressures, temperatures and equivalence ratios were measured and compared. In addition, numerical simulations were used to examine the reaction sensitivity of the laminar burning speed at low pressure. In trials at the lean flammability limit, the data indicated that it was more difficult to ignite the fuel under a lower pressure condition of 25 kPa and a lower temperature condition of 420 K. The experimental results of laminar burning speed were fitted to an equation providing the laminar burning speeds expected at different pressures (25–100 kPa), temperatures (400–480 K) and equivalence ratios (0.8–1.5). The temperature index (α=1.76) and pressure index (β=−0.15) of the fitting equation were obtained. Both hydrodynamic and diffusional thermal flame instabilities were found to be suppressed at low pressures. The negative effects of two specific reactions on laminar burning speed were greatly reduced at these same low pressures of 25 kPa. Full article
(This article belongs to the Special Issue Fuel Technology in Aviation and Aerospace)
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