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Energies
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Experimental and Numerical Thermal Science in Porous Media
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Experimental and Numerical Thermal Science in Porous Media

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "J: Thermal Management".

Deadline for manuscript submissions: closed (30 June 2025) | Viewed by 1460

Special Issue Editors

Prof. Dr. Ziad Saghir

E-Mail Website
Guest Editor
Department of Mechanical and Industrial Engineering, Toronto Metropolitan University, Toronto, ON M5B 2K3, Canada
Interests: computational fluid dynamics; material science; flow in porous media; biomedical engineering; thermofluid; phase change materials
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Mohammad Mansur Rahman

E-Mail Website
Guest Editor
Department of Mathematics, College of Science, Sultan Qaboos University, Al-Khod PC 123, Muscat, Oman
Interests: computational fluid dynamics; material science; flow in porous media; biomedical engineering; thermofluid; phase change materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This special issue covers topics in porous media related to metal foam, additive manufacturing using triply periodic minimum surfaces, design and investigation of additive manufacturing heat exchangers, and fundamental study in heat and mass transfer. Phase change material in porous media for cooling batteries and cooling surfaces. Nanofluids in porous media for cooling surfaces.

Prof. Dr. Ziad Saghir
Prof. Dr. Mohammad Mansur Rahman
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 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

  • triply periodic minimal surfaces
  • porous media
  • heat enhancement
  • heat exchangers
  • additive manufacturing porous media
  • energy storage
  • phase change material
  • nanofluids

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Related Special Issue

Published Papers (2 papers)

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Research

20 pages, 3320 KiB  
Article
Experimental Study on Heat Transfer Performance of FKS-TPMS Heat Sink Designs and Time Series Prediction
by Mahsa Hajialibabaei and Mohamad Ziad Saghir
Energies 2025, 18(13), 3459; https://doi.org/10.3390/en18133459 - 1 Jul 2025
Viewed by 276
Abstract
As the demand for advanced cooling solutions increases with the rise in artificial intelligence and high-performance computing, efficient thermal management becomes critical, particularly for data centers and electronic systems. Triply Periodic Minimal Surface (TPMS) heat sinks have shown superior thermal performance over conventional [...] Read more.
As the demand for advanced cooling solutions increases with the rise in artificial intelligence and high-performance computing, efficient thermal management becomes critical, particularly for data centers and electronic systems. Triply Periodic Minimal Surface (TPMS) heat sinks have shown superior thermal performance over conventional designs by enhancing heat transfer efficiency. In this study, a novel Fischer–Koch-S (FKS) TPMS heat sink was experimentally tested with four porosity configurations, 0.6 (identified as P6), 0.7 (identified as P7), 0.8 (identified as P8), and a gradient porosity ranging from 0.6 to 0.8 (identified as P678) along the flow direction, under a mass flow rate range of 0.012 to 0.019 kg/s. Key thermal parameters including surface temperature, thermal resistance, heat transfer coefficient, and Nusselt number were analyzed and compared to the conventional straight-channel heat sink (SCHS) using numerical modeling. Among all configurations, the P6 design demonstrated the best performance, with surface temperature differences ranging from 13.1 to 14.2 °C at 0.019 kg/s and a 54.46% higher heat transfer coefficient compared to the P8 design at the lowest mass flow rate. Thermal resistance decreased consistently with an increasing mass flow rate, with P6 achieving a 31.8% reduction compared to P8 at 0.019 kg/s. The P678 gradient design offered improved temperature uniformity and performance at higher mass flow rates. Nusselt number ratios confirmed that low-porosity and gradient TPMS designs outperform the SCHS, with performance advantages increasing as the mass flow rate rises. To further enhance the experimental process, a deep learning model based on a Temporal Convolutional Network (TCN) was developed to predict steady-state surface temperatures using early-stage time-series data, to reduce test time and enable efficient validation. Full article
(This article belongs to the Special Issue Experimental and Numerical Thermal Science in Porous Media)
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17 pages, 18777 KiB  
Article
Development of New Composite Beds for Enhancing the Heat Transfer in Adsorption Cooling Systems
by Łukasz Mika, Tomasz Bujok, Karol Sztekler, Wojciech Kalawa, Ewelina Radomska, Agata Mlonka-Mędrala, Jakub Čespiva and Piotr Boruta
Energies 2025, 18(3), 584; https://doi.org/10.3390/en18030584 - 26 Jan 2025
Viewed by 699
Abstract
Adsorption chillers are distinguished by their low electricity consumption, lack of moving parts and exceptional reliability. However, their considerable weight, due to the low sorption capacity of conventional adsorbents, remains a key limitation. This study investigates the effect of introducing thermally conductive additives—aluminium [...] Read more.
Adsorption chillers are distinguished by their low electricity consumption, lack of moving parts and exceptional reliability. However, their considerable weight, due to the low sorption capacity of conventional adsorbents, remains a key limitation. This study investigates the effect of introducing thermally conductive additives—aluminium powder, copper powder and graphite flakes—at 5, 15 and 25 wt.% to silica-gel-based adsorbent beds on the enhancement of heat transfer. In contrast to other works, this study also includes a novel analysis of the thermal properties of dry sorbents, since the moisture content affects the thermal conductivity. Additives improve the thermal conductivity, as measured by the laser flash method (LFA), of the bed by up to 20.7% while maintaining a reasonable sorption capacity, as measured by the dynamic vapor sorption (DVS). Additions of copper at 5–15 wt.% and graphite flakes at 15–25 wt.% provide an optimal compromise between thermal conductivity and sorption capacity. Aluminium powder, on the other hand, offers flexibility over a wider range (5–25 wt.%). The increased thermal conductivity of these modified materials is expected to lead to more efficient heat transport, which suggests the hypothesis that it could reduce the cycle time and increase the efficiency of adsorption chillers. Full article
(This article belongs to the Special Issue Experimental and Numerical Thermal Science in Porous Media)
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