Title | Modified steady discrete unified gas kinetic scheme for multiscale radiative heat transfer |
Author | |
Corresponding Author | Zhou, Xiafeng; Guo, Zhaoli |
Publication Years | 2023-04-01
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DOI | |
Source Title | |
ISSN | 0017-9310
|
EISSN | 1879-2189
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Volume | 203 |
Abstract | In this work, a steady discrete unified gas kinetic scheme (SDUGKS) is proposed to solve the steady ra-diative transfer equation (RTE), which is an improvement of the original SDUGKS [X. F. Zhou et al. , J. Comput. Phys. 423, 109767 (2020)]. The trapezoidal rule other than the rectangular rule used in the orig-inal SDUGKS is adopted in the proposed method in the reconstruction of energy flux across cell interface, just as the unsteady DUGKS. By this way, the length of the characteristic line of the modified SDUGKS establishes a relationship with the Courant-Friedrichs-Lewy (CFL) number in the transient DUGKS, which guarantees the accuracy of the modified SDUGKS. Furthermore, the length of the characteristic line is no longer limited by the extinction coefficient like in the original SDUGKS. As a result, the modified SDUGKS is more accurate than the original SDUGKS, and more efficient than the transient DUGKS for steady ra-diation problems. Furthermore, the smooth linear interpolation and the van Leer limiter are used for problems with smooth and discontinuous optical thicknesses, respectively. Several numerical tests with optical thickness varying from optical thin to thick are conducted to validate the present scheme. Nu-merical results demonstrate that the modified SDUGKS can serve as an effective tool in the study of multiscale steady radiative heat transfer in participating media.(c) 2022 Elsevier Ltd. All rights reserved. |
Keywords | |
URL | [Source Record] |
Indexed By | |
Language | English
|
SUSTech Authorship | Others
|
Funding Project | Fundamental Research Funds for the Central Universities[HUST: 2019kfyXMBZ040]
; National Natural Science Foundation of China["12005073","12002131"]
; China Postdoctoral Science Foundation[2021M701565]
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WOS Research Area | Thermodynamics
; Engineering
; Mechanics
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WOS Subject | Thermodynamics
; Engineering, Mechanical
; Mechanics
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WOS Accession No | WOS:000913687400001
|
Publisher | |
ESI Research Field | ENGINEERING
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Scopus EID | 2-s2.0-85145197214
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Data Source | Web of Science
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Citation statistics |
Cited Times [WOS]:2
|
Document Type | Journal Article |
Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/425197 |
Department | Department of Mechanics and Aerospace Engineering |
Affiliation | 1.Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Peoples R China 2.Huazhong Univ Sci & Technol, Inst Interdisciplinary Res Math & Appl Sci, Wuhan 430074, Peoples R China 3.Huazhong Univ Sci & Technol, Sch Energy & Power Engn, Dept Nucl Engn & Technol, Wuhan 430074, Peoples R China 4.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Peoples R China |
Recommended Citation GB/T 7714 |
Song, Xinliang,Zhang, Yue,Zhou, Xiafeng,et al. Modified steady discrete unified gas kinetic scheme for multiscale radiative heat transfer[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2023,203.
|
APA |
Song, Xinliang,Zhang, Yue,Zhou, Xiafeng,Zhang, Chuang,&Guo, Zhaoli.(2023).Modified steady discrete unified gas kinetic scheme for multiscale radiative heat transfer.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,203.
|
MLA |
Song, Xinliang,et al."Modified steady discrete unified gas kinetic scheme for multiscale radiative heat transfer".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 203(2023).
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