Thermal radiation analysis of packed bed by a homogenization method

被引：44
|
作者：
Asakuma, Yusuke [1 ]
Kanazawa, Yushin [1 ]
Yamamoto, Tsuyoshi [2 ]
机构：
[1] Univ Hyogo, Dept Mech & Syst Engn, Himeji, Hyogo 6712280, Japan
[2] Kyushu Univ, Dept Chem Engn, Nishi Ku, Fukuoka 8190395, Japan
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2014年 / 73卷
关键词：
Effective thermal conductivity; Homogenization method; Multiscale analysis; Microstructure; Thermal radiation; COMPOSITE-MATERIALS; HEAT-TRANSFER; CONDUCTIVITY; PARTICLES; CONTACT;
D O I：
10.1016/j.ijheatmasstransfer.2014.01.065
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Effective thermal conductivity with radiation is analyzed by the homogenization method. This method can precisely represent the microstructure of a packed bed. In this study, the effects of parameters such as the radiation emissivity, temperature and particle size of the packed bed on the conductivity have been estimated to clarify the mechanism of complex packed structure. For example, heat transfer by radiation does not dominate if the material has voids of less than 1 mm in size. Moreover, by comparing a conventional model and the homogenization method, applicability of their models were shown for estimating the effective thermal conductivity. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：97 / 102
页数：6
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