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Multiscale Heat and Mass Transfer and Artificial Intelligence

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Applied Thermal Engineering".

Deadline for manuscript submissions: 10 July 2025 | Viewed by 2541

Special Issue Editors


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Guest Editor
School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
Interests: heat transfer; complex fluid; AI for thermal management; active cooling techniques
School of Construction Management and Engineering, University of Reading, Reading RG6 6AH, UK
Interests: smart cities; built environment; low-carbon energy systems; sustainable mobility; intelligent computing
Special Issues, Collections and Topics in MDPI journals
School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
Interests: thermoaerodynamics; high speed flow; thermal protection system; AI-CFD; AI-heat transfer
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues, 

Heat and mass transfer is an important research area that is relevant to a variety of emerging technologies in the fields of energy, low-carbon energy utilization, chemical engineering and aerospace engineering, etc. Multiscale simulation techniques and complement experimental studies from atomic to macroscopic scale brought about numerous breakthroughs. Recently, cutting-edge artificial intelligence (AI) technologies have emerged as powerful tools to accelerate fundamental physics-based understanding and applications in heat and mass transfer research. In view of these achievements, this Special Issue is devoted to showcasing cutting-edge research and developments in the field of multiscale heat and mass transfer and AI technologies. This Special Issue will cover a broad spectrum of topics, including but not limited to:

  • Flow and temperature field reconstruction technology;
  • Machine learning and AI in thermal management;
  • Multiscale simulation techniques in heat and mass transfer characteristics;
  • Physics-informed neural networks (PINNs) for heat-transfer problems;
  • Advanced measurement and experimental techniques;
  • Micro/nano-scale thermos-fluidics;
  • Heat and mass transfer under extreme conditions;
  • Multidisciplinary research on thermal energy conversion and heat transfer.

Dr. Guice Yao
Dr. Chuang Wen
Dr. Jin Zhao
Guest Editors

Manuscript Submission Information

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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

  • machine learning
  • heat transfer
  • multiscale modelling
  • multidisciplinary energy conversion
  • temperature reconstruction
  • flow dynamics
  • physics-informed neural network

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Published Papers (2 papers)

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Research

24 pages, 12079 KiB  
Article
Estimation of the Effect of Oblique Positioned Obstacle Placement on Thermal Performance of a Horizontal Mantle Hot Water Tank with Machine Learning
by Aslı Durmuşoğlu, Buket Turgut, Yusuf Tekin and Burak Turgut
Appl. Sci. 2025, 15(1), 48; https://doi.org/10.3390/app15010048 - 25 Dec 2024
Viewed by 686
Abstract
Due to the growing popularity of vacuum tube solar collectors and their more esthetically pleasing look, horizontal hot water tanks are increasingly being used in solar hot water systems. In order to improve the thermal performance of a horizontal mantled hot water tank, [...] Read more.
Due to the growing popularity of vacuum tube solar collectors and their more esthetically pleasing look, horizontal hot water tanks are increasingly being used in solar hot water systems. In order to improve the thermal performance of a horizontal mantled hot water tank, this work numerically examines the impact of positioning inclination barriers parallel or coincident to one another at varying angles. The main input provided the velocity V = 0.036, 0.073, 0.11, and 0.147 m/s, and analysis were performed for each speed. The study concluded that V = 0.073 m/s was the ideal mains input velocity for each scenario and that raising the speed typically resulted in a lower mains outlet temperature. According to the study’s findings, the tank design with the first obstacle 150 mm away and the two obstacles 100 mm apart achieves the best efficiency. The residential water temperature in this model is 312 K, while the storage water temperature is 309.5 K. In this study, a feed-forward artificial neural network (ANN) model based predictor was designed to estimate the mantle outlet and main outlet temperatures and the temperature of the stored water. Analyses were performed for different network inlet velocities and obstacle combinations, and ANN showed superior performance in estimating temperature parameters. Full article
(This article belongs to the Special Issue Multiscale Heat and Mass Transfer and Artificial Intelligence)
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15 pages, 2540 KiB  
Article
Dependence of Thermal Conductivity on Size and Specific Surface Area for Different Based CoFe2O4 Cluster Nanofluids
by Javier P. Vallejo, Amir Elsaidy and Luis Lugo
Appl. Sci. 2024, 14(21), 9954; https://doi.org/10.3390/app14219954 - 31 Oct 2024
Cited by 1 | Viewed by 1199
Abstract
Enhancing the thermal conductivity of fluids by using nanoparticles with outstanding thermophysical properties has acquired significant attention for heat-transfer applications. Nanofluids have the potential to optimize energy systems by improving heat-transfer efficiency. In this study, cobalt ferrite nanoparticles clusters with controlled mean sizes [...] Read more.
Enhancing the thermal conductivity of fluids by using nanoparticles with outstanding thermophysical properties has acquired significant attention for heat-transfer applications. Nanofluids have the potential to optimize energy systems by improving heat-transfer efficiency. In this study, cobalt ferrite nanoparticles clusters with controlled mean sizes ranging from 97 to 192 nm were synthesized using a solvothermal method to develop novel nanofluids with enhanced thermal conductivity. These clusters were comprehensively characterized using transmission electron microscopy, X-ray diffraction, Raman spectroscopy, vibrating-sample magnetometry, and nitrogen physisorption. The CoFe2O4 cluster nanofluids were prepared using the two-step method with various base fluids (water, propylene glycol, and a mixture of both). Dynamic light scattering analyses of the average Z-size of the dispersed nanoadditives over time revealed that the stability of the dispersions is influenced by cluster size and the proportion of glycol in the base fluid. The thermal conductivity of the base fluid and nine different 0.5 wt% CoFe2O4 cluster nanofluids was measured using the transient hot wire method at temperatures of 293.15, 303.15, and 313.15 K, showing different temperature dependencies. The study also explores the relationships between the thermal conductivity, cluster size, and specific surface area of the nanoadditives. A maximum thermal conductivity enhancement of 4.2% was reported for the 0.5 wt% nanofluid based on propylene glycol containing 97 nm CoFe2O4 clusters. The findings suggest that the specific surface area of nanostructures is a more relevant parameter than size for describing improvements in thermal conductivity. Full article
(This article belongs to the Special Issue Multiscale Heat and Mass Transfer and Artificial Intelligence)
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