Anisotropy of effective thermal conductivity analysis of heat transfer coefficient distribution around spherical particles in a packed bed

Yusuke Asakuma, Masahiro Asada, Yushin Kanazawa, Tsuyoshi Yamamoto

Research output: Contribution to journalArticle

Abstract

Effective thermal conductivity with radiation is analyzed by a homogenization method. The method used can precisely represent the conditions around particles in a packed bed. In this study, the effects of variation in parameters such as heat transfer coefficient distribution around spherical particles in a packed bed, Reynolds number, temperature and particle size on the conductivity were estimated in order to elucidate the heat transfer mechanism of complex packed structures. The results show that it is unnecessary in heat transfer analysis to consider the anisotropic behavior of the flow direction for larger particles, high Reynolds numbers and high temperatures. However, the heat transfer was anisotropic for smaller particle sizes.

Original languageEnglish
Pages (from-to)31-38
Number of pages8
JournalComputer Assisted Methods in Engineering and Science
Volume22
Issue number1
Publication statusPublished - Jan 1 2015

Fingerprint

Packed beds
Heat transfer coefficients
Thermal conductivity
Anisotropy
Heat transfer
Reynolds number
Particle size
Homogenization method
Radiation
Temperature

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Computational Mechanics
  • Mechanical Engineering

Cite this

Anisotropy of effective thermal conductivity analysis of heat transfer coefficient distribution around spherical particles in a packed bed. / Asakuma, Yusuke; Asada, Masahiro; Kanazawa, Yushin; Yamamoto, Tsuyoshi.

In: Computer Assisted Methods in Engineering and Science, Vol. 22, No. 1, 01.01.2015, p. 31-38.

Research output: Contribution to journalArticle

@article{6d7b80e531bd446091872a144c7cf96e,
title = "Anisotropy of effective thermal conductivity analysis of heat transfer coefficient distribution around spherical particles in a packed bed",
abstract = "Effective thermal conductivity with radiation is analyzed by a homogenization method. The method used can precisely represent the conditions around particles in a packed bed. In this study, the effects of variation in parameters such as heat transfer coefficient distribution around spherical particles in a packed bed, Reynolds number, temperature and particle size on the conductivity were estimated in order to elucidate the heat transfer mechanism of complex packed structures. The results show that it is unnecessary in heat transfer analysis to consider the anisotropic behavior of the flow direction for larger particles, high Reynolds numbers and high temperatures. However, the heat transfer was anisotropic for smaller particle sizes.",
author = "Yusuke Asakuma and Masahiro Asada and Yushin Kanazawa and Tsuyoshi Yamamoto",
year = "2015",
month = "1",
day = "1",
language = "English",
volume = "22",
pages = "31--38",
journal = "Computer Assisted Methods in Engineering and Science",
issn = "2299-3649",
publisher = "Polish Academy of Sciences",
number = "1",

}

TY - JOUR

T1 - Anisotropy of effective thermal conductivity analysis of heat transfer coefficient distribution around spherical particles in a packed bed

AU - Asakuma, Yusuke

AU - Asada, Masahiro

AU - Kanazawa, Yushin

AU - Yamamoto, Tsuyoshi

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Effective thermal conductivity with radiation is analyzed by a homogenization method. The method used can precisely represent the conditions around particles in a packed bed. In this study, the effects of variation in parameters such as heat transfer coefficient distribution around spherical particles in a packed bed, Reynolds number, temperature and particle size on the conductivity were estimated in order to elucidate the heat transfer mechanism of complex packed structures. The results show that it is unnecessary in heat transfer analysis to consider the anisotropic behavior of the flow direction for larger particles, high Reynolds numbers and high temperatures. However, the heat transfer was anisotropic for smaller particle sizes.

AB - Effective thermal conductivity with radiation is analyzed by a homogenization method. The method used can precisely represent the conditions around particles in a packed bed. In this study, the effects of variation in parameters such as heat transfer coefficient distribution around spherical particles in a packed bed, Reynolds number, temperature and particle size on the conductivity were estimated in order to elucidate the heat transfer mechanism of complex packed structures. The results show that it is unnecessary in heat transfer analysis to consider the anisotropic behavior of the flow direction for larger particles, high Reynolds numbers and high temperatures. However, the heat transfer was anisotropic for smaller particle sizes.

UR - http://www.scopus.com/inward/record.url?scp=85064686321&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85064686321&partnerID=8YFLogxK

M3 - Article

VL - 22

SP - 31

EP - 38

JO - Computer Assisted Methods in Engineering and Science

JF - Computer Assisted Methods in Engineering and Science

SN - 2299-3649

IS - 1

ER -