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Heat Transfer Research
インパクトファクター: 1.199 5年インパクトファクター: 1.155 SJR: 0.267 SNIP: 0.503 CiteScore™: 1.4

ISSN 印刷: 1064-2285
ISSN オンライン: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2016010698
pages 633-651

ULTRAFAST RADIATIVE TRANSFER CHARACTERISTICS IN MULTILAYER INHOMOGENEOUS 3D MEDIA SUBJECTED TO A COLLIMATED SHORT SQUARE PULSE TRAIN

Masato Akamatsu
Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
Zhixiong Guo
Department of Mechanical and Aerospace Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA

要約

We carried out 3D numerical modeling to understand ultrafast radiative transfer characteristics in multilayer inhomogeneous media, irradiated by a collimated short square pulse train, using the discrete-ordinates method (DOM) in combination with Duhamel's superposition theorem. The DOM was used to first obtain the temporal solution subjected to a single unit step pulse. Duhamel's superposition theorem was then used to reconstruct the response to different kinds of pulse trains. The efficiency of superposition was shown via CPU time comparison with and without use of superposition. The reflectance and transmittance signals are characterized, focusing on the effects of optical thickness, scattering albedo, pulse width and interval, and detection position.


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