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Fluid Mechanics, Heat Transfer, Combustion, Energy Systems and Propulsion

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "J1: Heat and Mass Transfer".

Deadline for manuscript submissions: 30 November 2026 | Viewed by 807

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Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100 Lecce, Italy
Interests: advanced combustion technologies; applied thermodynamics; heat transfer; propulsion; pollutant emissions; energy-conversion processes; noise emission; numerical model; sustainable buildings and infrastructures; sustainable transports; physical processes in experimental tests; engine efficiency; thermal systems; alternative fuels; climate changes; drones; urban air mobility; experimental tests
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Special Issue Information

Dear Colleagues,

As shown in the last COP30 in Belém, climate cooperation is alive and kicking, keeping humanity in the fight for a livable planet. The development of clean and affordable transport technologies, energy, combustion, buildings and infrastructure systems in different areas of the world is a necessity. As example, the optimization of heat transfer in energy systems is fundamental for obtaining more efficient and environmentally friendly solutions.

It is difficult to imagine a modern society without clean energy-conversion systems. Their use has been increasing not only in the traditional fields of application but also in more recent areas, including also renewable energy conversion systems, electric aircraft, electric vehicles, sustainable infrastructures, etc.

This Special Issue will collect a series of scientific articles that report important actions taken to improve aspects of energy performance optimization and pollution reduction. These may include all energy processes such as propulsion systems, engines, advanced combustion technologies, new working fluid for energy applications, noise emissions, nanoenergy conversion systems, the use of artificial intelligence and machine learning in energy  technologies  as well as thermal comfort and the environmental impact of buildings and infrastructures.

This Special Issue aims to present and disseminate the most recent advances related to the theory, design, modelling, application, control and condition monitoring of all types of energy technologies.

Articles are invited from all countries.

Dr. Guido Marseglia
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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized 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

  • smart cities
  • advanced combustion technologies
  • heat transfer
  • pollution reduction
  • renewable energies
  • artificial intelligence in energy systems
  • micro- and nanoenergy conversion systems
  • sustainable transports, infrastructures and buildings and propulsion systems
  • batteries, fuel cells, capacitors
  • hydrogen energy chain

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Published Papers (1 paper)

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Research

18 pages, 5358 KB  
Article
Energy Effects of Ground Vortex-Induced Flow Distortion and Foreign Object Ingestion in Aeroengine Intakes
by Longqing Lei, Pengfei Chen, Hua Yang, Zhiyou Liu and Wei Chen
Energies 2026, 19(5), 1317; https://doi.org/10.3390/en19051317 - 5 Mar 2026
Viewed by 483
Abstract
Ground vortex formation beneath aeroengine intakes during near-ground operations represents an energy-related aerodynamic issue, as it degrades inlet flow quality, induces pressure distortion, and reduces the effective utilization of incoming kinetic energy. This study investigates the unsteady characteristics of ground vortex flow under [...] Read more.
Ground vortex formation beneath aeroengine intakes during near-ground operations represents an energy-related aerodynamic issue, as it degrades inlet flow quality, induces pressure distortion, and reduces the effective utilization of incoming kinetic energy. This study investigates the unsteady characteristics of ground vortex flow under headwind conditions and its influence on foreign object ingestion (FOI) in an aeroengine intake. Three-dimensional unsteady Reynolds-averaged Navier–Stokes (URANS) simulations coupled with a Lagrangian Discrete Phase Model (DPM) are employed to resolve the interaction between intake-induced vortices and dispersed particles near the ground. The results indicate that the ground vortex rapidly develops into a quasi-periodic state, generating significant unsteady total pressure distortion at the intake face, with peak fluctuations reaching approximately 10% of the mean value. This flow non-uniformity reflects a deterioration of inlet energy distribution and is detrimental to downstream compression efficiency. Particle ingestion behavior is strongly dependent on particle density and diameter. Low-density and small particles are more readily entrained into the vortex core and ingested, whereas particles with higher density or larger size exhibit increased inertia and reduced sensitivity to vortex-induced energy transport. The ingestion region is biased toward the lower portion of the intake, consistent with the vortex core location. These findings provide insight into vortex-induced energy distortion and FOI mechanisms, offering guidance for improving aeroengine intake design and energy-efficient operation during near-ground conditions. Full article
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