Advanced Fluid Machinery and Integrated Energy Systems: Design, Optimization, and Applications

A special issue of Eng (ISSN 2673-4117).

Deadline for manuscript submissions: 31 December 2026 | Viewed by 4017

Special Issue Editors


E-Mail Website
Guest Editor
Faculty of Engineering, Department of Engineering and Sciences, Universitas Mercatorum, 10-00186 Roma, Italy
Interests: fluid machines; machine design; energy system analysis; heat exchange; hybrid vehicles; optimization of power generation systems; turbomachinery; volumetric machines; biomedical applications of fluid machines; energy and exergy analysis
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Engineering and Sciences, Faculty of Industrial Engineering, Universitas Mercatorum, Roma, Italy
Interests: low-carbon energy system; renewables; energy efficiency
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Electrical and Energy Engineering, Sapienza University of Roma, Roma, Italy
Interests: hybrid electric powertrain; storage system; thermal management; supercapacitor; vehicle dynamics; internal combustion engines
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Today’s fluid machinery—including pumps, compressors, turbines, and complex hydraulic systems—benefits from the adoption of new materials, optimized aerodynamic configurations, and high-fidelity simulation techniques based on advanced CFD methods. The use of numerical models coupled with multi-objective optimization algorithms allows for improvements in energy efficiency, reductions in undesirable phenomena such as cavitation and instability, and the optimization of the dynamic behavior of components operating under extreme or variable conditions. At the same time, the introduction of additive manufacturing techniques enables the creation of complex geometries and customized solutions that enhance performance and reliability, supporting faster development cycles.

Integrated energy systems represent a new frontier in intelligent energy management, connecting renewable sources, storage systems, thermal networks, and electromechanical components through hybrid and flexible architectures. The integration of advanced fluid machines into these networks allows for the maximization of energy recovery, the optimization of waste heat usage, the enabling of autonomous microgrids, and the improvement of system stability even in the presence of the high intermittency of renewable sources. The application of predictive models, machine learning algorithms, and digital twin tools promotes proactive control, predictive maintenance, and optimal real-time energy management.

In conclusion, the synergy between advanced fluid machines and integrated energy systems is a key element in achieving a low-emission, high-efficiency energy future. Innovation in design, model-based optimization, and the use of intelligent control strategies allow us to address current and future challenges, making these systems essential for the transition to more sustainable, resilient energy infrastructures focused on a circular economy.

Prof. Dr. Roberto Capata
Dr. Filippo Busato
Prof. Dr. Leone Martellucci
Guest Editors

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-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Eng is an international peer-reviewed open access monthly 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 1400 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

  • fluid machinery
  • integrated energy systems
  • predictive models
  • machine learning algorithms
  • integrated energy systems
  • in design
  • model-based optimization
  • circular economy

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

Jump to: Review

16 pages, 3300 KB  
Article
Maritime-Oriented Analysis of Heat Transfer Enhancement in Jeffrey Nanofluid Flow over a Stretching Sheet Embedded in a Porous Medium
by Nourhan I. Ghoneim, A. M. Amer, Seyed Behbood Issa-Zadeh and Ahmed M. Megahed
Eng 2026, 7(2), 98; https://doi.org/10.3390/eng7020098 - 19 Feb 2026
Viewed by 384
Abstract
This study numerically investigates the hydrothermal behaviour of a Jeffrey nanofluid with relevance to maritime thermal systems. The coupled nonlinear governing equations for momentum, heat, and mass transport are solved using a shooting technique that accounts for magnetohydrodynamic effects, Darcy porous-media resistance, viscous [...] Read more.
This study numerically investigates the hydrothermal behaviour of a Jeffrey nanofluid with relevance to maritime thermal systems. The coupled nonlinear governing equations for momentum, heat, and mass transport are solved using a shooting technique that accounts for magnetohydrodynamic effects, Darcy porous-media resistance, viscous dissipation, and spatially varying internal heat generation. Variable thermophysical properties, including temperature-dependent viscosity and density, are also considered. The results reveal that porous resistance, fluid elasticity, and thermophysical variations significantly influence velocity, temperature, and concentration fields. The combined effects of porous drag and variable properties markedly alter the characteristics of heat and mass transfer. These findings provide insights into thermal and mass-transport performance, including skin friction, heat transfer, and concentration distributions, which are critical metrics for porous heat exchangers and nanofluid-based maritime coatings. Here, maritime relevance is represented via a generalised porous nanofluid model rather than a specific material. Among the key findings, increasing the slip velocity factor can reduce the surface skin-friction coefficient by approximately 48.7%, while the heat-transfer rate increases by nearly 27.1%, accompanied by a decrease of about 18.9% in the Sherwood number. Conversely, raising the density factor enhances the skin friction coefficient by roughly 103.8% and also augments the heat and mass transfer rates by about 61.3% and 106.1%, respectively. Likewise, at zero relaxation–retardation ratio, the flow reduces to the Newtonian case. Increasing this factor reduces the local Nusselt number by about 1.45%, indicating a slight weakening of heat transfer due to elastic effects. Furthermore, the reliability of the current numerical framework is established through a dual-validation approach, including an analytical assessment of limiting cases and a rigorous comparison with established data from the literature. Full article
Show Figures

Figure 1

Review

Jump to: Research

32 pages, 5198 KB  
Review
The Tesla Turbine—Design, Simulations, Testing and Proposed Applications: A Technological Review
by Roberto Capata and Alfonso Calabria
Eng 2026, 7(1), 30; https://doi.org/10.3390/eng7010030 - 7 Jan 2026
Viewed by 3299
Abstract
This article offers a comprehensive technical and mechanical review of the Tesla turbine, an innovative device conceived by Nikola Tesla. The core research question guiding this review is: How can the design and application of the Tesla turbine be optimized to overcome its [...] Read more.
This article offers a comprehensive technical and mechanical review of the Tesla turbine, an innovative device conceived by Nikola Tesla. The core research question guiding this review is: How can the design and application of the Tesla turbine be optimized to overcome its current efficiency limitations and unlock its full potential across various energy recovery technologies? The analysis focuses on the mechanical design of the turbine, illustrating the configuration of co-axial discs without blades mounted on a central shaft, and on the fluid dynamic phenomena that generate torque through the viscous boundary layer between the discs. Mathematical models based on the equations of viscous motion and CFD simulations are used to evaluate mechanical and fluid-dynamic losses, such as viscous friction, edge losses, and inlet duct losses. The work describes mechanical engineering challenges related to efficiency and performance, highlighting optimization techniques for the number and spacing of the discs, nozzle geometry, and thermal management to mitigate the risk of overheating. Finally, potential application areas in microturbine technology for low-enthalpy thermal cycles and energy recovery are examined. The article makes a significant contribution to applied mechanical engineering, offering design guidelines and an updated overview of the challenges and opportunities of Tesla turbine technology. Full article
Show Figures

Figure 1

Back to TopTop