☆ 4.7 Article

Discontinuous finite element method applied to transient pure and coupled radiative heat transfer

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2021)

期刊

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER

卷 122, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD

DOI: 10.1016/j.icheatmasstransfer.2021.105156

关键词

Discontinuous finite element method; Transient radiative transfer; Coupled heat transfer; Radiation-conduction

类别

Thermodynamics Mechanics

资金

National Natural Science Foundation of China [51906014]
China Postdoctoral Science Foundation [2019M651285, 2018M641196]
Fundamental Research Funds for the Central Universities [FRF-TP-18-072A1, FRF-BD-20-09A]

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摘要

The DFEM method is successfully applied to solve pure and coupled radiative heat transfer problems in participating media, demonstrating high accuracy in calculating pure radiative heat transfer problems and radiation-conduction heat transfer problems.

The discontinuous finite element method (DFEM) is applied to transient pure and coupled radiative heat transfer problems in participating media. The DFEM discretization is presented for the time-dependent governing equations that take the full time-dependent term into account. Transient pure radiative transfer problems in a slab medium illuminated by a collimated Gaussian pulse and in a vacuum gapped medium subjected to diffuse irradiation is solved via the DFEM. The DFEM is further extended to transient radiation-conduction problems in two-dimensional media. The DFEM solutions of time-dependent radiation-intensity-based quantities are verified to be highly accurate and they are presented in the form of tabulated numbers with four decimal digits.

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