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Entropy
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Applied Thermodynamics and Heat Transfer II
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Applied Thermodynamics and Heat Transfer II

A special issue of Entropy (ISSN 1099-4300). This special issue belongs to the section "Thermodynamics".

Deadline for manuscript submissions: 20 July 2024 | Viewed by 3261

Special Issue Editor

Dr. Jia Yan

E-Mail Website
Guest Editor
School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, China
Interests: heat and mass transfer; energy-efficient heat pump; ejector cooling; computational fluid dynamics; green building
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nowadays, applied thermodynamics and heat transfer have wide influences on many aspects of thermal engineering and related areas such as electricity generation and transmission, building heating and cooling, air travel, and space flight. Moreover, both research areas have applications in human well-being by addressing looming societal challenges owing to the energy crisis, global climate change, and burgeoning population. To be specific, applied thermodynamics and heat transfer provide helpful insights into the design, development, optimization, and performance improvement of cooling, power, and energy systems.

Owing to the above-mentioned reasons, we propose this Special Issue which aims to address current issues in the areas of applied thermodynamics and heat transfer. We welcome for submission original research, as well as review articles and short communications, on topics that include (but are not limited to) the thermodynamic process and heat transfer of hot and novel technologies. Additionally, reports on the use of thermodynamics and heat transfer for analyzing physical phenomena with experimental methods or computational procedures are very welcome.

Dr. Jia Yan
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. Entropy 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 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

  • applied thermodynamics
  • heat transfer
  • power generation
  • cooling
  • heating, ventilation, and air conditioning (HVAC)
  • computational fluid dynamics
  • green building
  • energy saving

Related Special Issue

Published Papers (3 papers)

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Research

13 pages, 2565 KiB  
Article
A Novel Multi-Step Global Mechanism Scheme for n-Decane Combustion
by Shaozhuan Xiong and Yantian Bi
Entropy 2023, 25(10), 1389; https://doi.org/10.3390/e25101389 - 28 Sep 2023
Viewed by 727
Abstract
Based on the directed relation graph with error propagation (DRGEP) reduction method, a detailed mechanism consisting of 119 species and 527 reactions for n-decane was simplified. As a result, a skeletal mechanism comprising 32 species and 73 reactions was derived. Subsequently, the quasi-steady [...] Read more.
Based on the directed relation graph with error propagation (DRGEP) reduction method, a detailed mechanism consisting of 119 species and 527 reactions for n-decane was simplified. As a result, a skeletal mechanism comprising 32 species and 73 reactions was derived. Subsequently, the quasi-steady state approximation (QSSA) reduction method was employed to further simplify the skeletal mechanism, resulting in a reduced mechanism with 18 species and 14 global reactions. A comparison between the reduced mechanism, skeletal mechanism, and detailed mechanism revealed that the reduced and skeletal mechanisms successfully replicated the combustion characteristics of the detailed mechanism under a range of initial conditions. These models can be credibly incorporated into large-scale combustion simulation, serving as a solid foundation for enhancing computational efficiency. Full article
(This article belongs to the Special Issue Applied Thermodynamics and Heat Transfer II)
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19 pages, 7755 KiB  
Article
Topology Optimization of Turbulent Flow Cooling Structures Based on the k-ε Model
by Yiwei Sun, Menglong Hao and Zexu Wang
Entropy 2023, 25(9), 1299; https://doi.org/10.3390/e25091299 - 05 Sep 2023
Viewed by 1323
Abstract
Topology optimization (TO) is an effective approach to designing novel and efficient heat transfer devices. However, the TO of conjugate heat transfer has been essentially limited to laminar flow conditions only. The present study proposes a framework for TO involving turbulent conjugate heat [...] Read more.
Topology optimization (TO) is an effective approach to designing novel and efficient heat transfer devices. However, the TO of conjugate heat transfer has been essentially limited to laminar flow conditions only. The present study proposes a framework for TO involving turbulent conjugate heat transfer based on the variable density method. Different from the commonly used and oversimplified Darcy model, this approach is based on the more accurate and widely accepted k-ε model to optimize turbulent flow channels. We add penalty terms to the Navier–Stokes equation, turbulent kinetic energy equation, and turbulent energy dissipation equation, and use interpolation models for the thermal properties of materials. A multi-objective optimization function, aiming to minimize the pressure drop and the average temperature, is set up to balance the thermal and hydraulic performance. A case study is conducted to compare various optimization methods in the turbulent regime, and the results show that the present method has substantially higher optimization effectiveness while remaining computationally inexpensive. Full article
(This article belongs to the Special Issue Applied Thermodynamics and Heat Transfer II)
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18 pages, 4150 KiB  
Article
Influence of an Axial-Electromagnetic Field Treatment Device with a Solenoid Structure on Crystallization Fouling on the Tube Side of a Shell-and-Tube Heat Exchanger
by Yaxuan Peng, Xuefei Xu and Yandong Liang
Entropy 2023, 25(7), 962; https://doi.org/10.3390/e25070962 - 21 Jun 2023
Viewed by 861
Abstract
In this study, the influence of an axial-electromagnetic field treatment device (AEFTD) with a solenoid structure using different electromagnetic frequencies on calcium carbonate (CaCO3) crystallization fouling on the tube side of a shell-and-tube heat exchanger was investigated. The experimental results indicated [...] Read more.
In this study, the influence of an axial-electromagnetic field treatment device (AEFTD) with a solenoid structure using different electromagnetic frequencies on calcium carbonate (CaCO3) crystallization fouling on the tube side of a shell-and-tube heat exchanger was investigated. The experimental results indicated that the application of the AEFTD could effectively reduce fouling resistance and decelerate the growth rate of CaCO3 fouling. The opposite trend between fouling resistance and the outlet temperature of an experimental fluid indicated that the application of the AEFTD could enhance heat transfer. Meanwhile, the crystal morphologies of the fouling samples were analyzed by means of scanning electron microscopy (SEM). The axial-electromagnetic field favored the formation of vaterite as opposed to calcite. Non-adhesive vaterite did not easily aggregate into clusters and was suspended in bulk to form muddy fouling that could be carried away by turbulent flow. Furthermore, the anti-fouling mechanism of the axial-electromagnetic field is discussed in detail. The anti-fouling effect of the AEFTD on CaCO3 fouling exhibited extreme characteristics in this study. Therefore, the effectiveness of the AEFTD is contingent upon the selection of the electromagnetic parameters. Full article
(This article belongs to the Special Issue Applied Thermodynamics and Heat Transfer II)
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