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Thermal Radiation
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Thermal Radiation

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Optical and Photonic Materials".

Deadline for manuscript submissions: closed (10 March 2023) | Viewed by 4186

Special Issue Editors

Prof. Dr. Hong Qi

E-Mail Website
Guest Editor
School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Interests: metamaterials; semi-transparent materials; measurement technology; thermal properties of materials; radiative heat transfer; inverse problem; optimization
Special Issues, Collections and Topics in MDPI journals
Dr. Yatao Ren

E-Mail Website
Co-Guest Editor
Associate Professor, School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Interests: radiative heat transfer; inverse problem; optimization; heat and mass transfer
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The Special Issue, “Thermal Radiation”, will address recent advances in numerical and experimental aspects of thermal radiation in the applications of photothermal properties’ measurement, solar thermal energy utilization, and thermal management. Thermal radiation broadly exists in many natural and industrial scenarios, ranging from the nanoscale to the macroscale. It is of particular importance for applications involving heat and light transfer. Therefore, accurate measurement and calculation for the photothermal properties of different kinds of materials need to be investigated. Recently, solar thermal energy conversion and storage have been widely investigated due to the urgent requirement for carbon neutrality. To further improve the efficiency of solar energy utilization, a deeper understanding of the photothermal conversion and transfer process are required. In the meantime, thermal radiation also plays an important role in the nanoscale for the enhancement of heat exchange, which has the potential to be employed for the thermal management of electronics. Therefore, this Special Issue will focus on the theoretical and experimental investigation of thermal radiation transfer in the nano- and macroscale. All types of articles are welcomed for this Special Issue, including but not limited to original research papers, letters, reviews, and prospects.

Prof. Dr. Hong Qi
Dr. Yatao Ren
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. Materials 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.

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Published Papers (2 papers)

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Research

12 pages, 3835 KiB  
Article
Thermodynamic Irreversibility Analysis of Thermal Radiation in Coal-Fired Furnace: Effect of Coal Ash Deposits
by Chong Zhang, Zhongnong Zhang and Chun Lou
Materials 2023, 16(2), 799; https://doi.org/10.3390/ma16020799 - 13 Jan 2023
Cited by 1 | Viewed by 1271
Abstract
In this paper, a three-dimensional (3-D) high-temperature furnace filled with a gas-solid medium was investigated, and the radiative transfer equation and the radiative entropy transfer equation in the chamber were applied in order to analyze the effect of coal deposits on thermal radiation. [...] Read more.
In this paper, a three-dimensional (3-D) high-temperature furnace filled with a gas-solid medium was investigated, and the radiative transfer equation and the radiative entropy transfer equation in the chamber were applied in order to analyze the effect of coal deposits on thermal radiation. The heat flux on the walls of the furnace and the entropy generation rate were determined due to the irreversibility of the radiative heat transfer process in the furnace. Furthermore, the effect of ash deposits on the wall surface on the irreversibility of the radiation heat transfer process was investigated. The numerical results show that when burning bituminous and sub-bituminous coal, ash deposits in the furnace led to a 48.2% and 63.2% decrease in wall radiative heat flux and a 9.1% and 12.4% decrease in the radiative entropy rate, respectively. The ash deposits also led to an increase in the entropy generation number and a decrease in the thermodynamic efficiency of the radiative heat transfer process in the furnace. Full article
(This article belongs to the Special Issue Thermal Radiation)
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21 pages, 9930 KiB  
Article
Integrated Infrared Radiation Characteristics of Aircraft Skin and the Exhaust Plume
by Juqi Zhang, Hong Qi, Donghang Jiang, Baohai Gao, Mingjian He, Yatao Ren and Kefu Li
Materials 2022, 15(21), 7726; https://doi.org/10.3390/ma15217726 - 2 Nov 2022
Cited by 3 | Viewed by 2275
Abstract
Infrared radiation (IR) characteristics are important parameters for detecting, identifying, and striking military targets in the context of systematic countermeasures. Accurate calculation of IR characteristics for aircraft is significant for the simulation of war situations and the designation of combat strategy. In this [...] Read more.
Infrared radiation (IR) characteristics are important parameters for detecting, identifying, and striking military targets in the context of systematic countermeasures. Accurate calculation of IR characteristics for aircraft is significant for the simulation of war situations and the designation of combat strategy. In this work, integrated IR characteristics of aircraft skin and exhaust plume and their interaction are investigated by considering the reflection based on a bi-directional reflectance distribution function and various influence factors such as solar irradiation, ground reflection, aerodynamic heating, and projection radiation from the background. Combined with infrared emission and reflection characteristics of the skin, omnidirectional IR intensity distributions of 3−5 μm and 8−14 μm at different Mach numbers are obtained. The exhaust plume IR characteristic for different waves and wavebands are also investigated by considering the presence or absence of base and the difference in nozzle inlet temperature. On this basis, integrated IR characteristics between the skin and exhaust plume are investigated. Results show that aircraft IR characteristics of 3−5 μm are concentrated in the exhaust plume and high-temperature skin near the exhaust plume, while the signals of 8−14 μm are concentrated in the skin. The research results are expected to supply guidance for better detection and identification of typical flight targets. Full article
(This article belongs to the Special Issue Thermal Radiation)
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