Computational study of heat transfer in gas fluidization

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

Heat transfer in gas fluidization is investigated at a particle scale by means of a combined discrete element method and computational fluid dynamicsapproach. To develop understanding of heat transfer at various conditions, the effects of a few important material properties such as particle size, the Hamaker constant and particle thermal conductivity are examined through controlled numerical experiments. It is found that the convective heat transfer is dominant, and radiative heat transfer becomes important when the temperature is high. Conductive heat transfer also plays a role depending on the flow regimes and material properties. The heat transfer between a fluidized bed and an immersed surface is enhanced by the increase of particle thermal conductivity while it is little affected by Young s modulus. The findings should be useful for better understanding and predicting the heat transfer in gas fluidization.
Original languageEnglish
Title of host publicationPowders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media
EditorsAibing Yu, Kejun Dong, Runyu Yang, Stefan Luding
Place of PublicationMelville NY USA
PublisherAmerican Institute of Physics
Pages1114 - 1117
Number of pages4
Volume1542
ISBN (Print)9780735411661
DOIs
Publication statusPublished - 2013
Externally publishedYes
EventPowders and Grains 2013 - Sydney, Australia
Duration: 8 Jul 201312 Jul 2013
Conference number: 7th
http://www.pg2013.unsw.edu.au/
http://www.proceedings.com/21017.html

Conference

ConferencePowders and Grains 2013
CountryAustralia
CitySydney
Period8/07/1312/07/13
Internet address

Cite this

Hou, Q., Zhou, Z., & Yu, A. (2013). Computational study of heat transfer in gas fluidization. In A. Yu, K. Dong, R. Yang, & S. Luding (Eds.), Powders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media (Vol. 1542, pp. 1114 - 1117). Melville NY USA: American Institute of Physics. https://doi.org/10.1063/1.4812131
Hou, Qinfu ; Zhou, Zongyan ; Yu, Aibing. / Computational study of heat transfer in gas fluidization. Powders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media. editor / Aibing Yu ; Kejun Dong ; Runyu Yang ; Stefan Luding. Vol. 1542 Melville NY USA : American Institute of Physics, 2013. pp. 1114 - 1117
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abstract = "Heat transfer in gas fluidization is investigated at a particle scale by means of a combined discrete element method and computational fluid dynamicsapproach. To develop understanding of heat transfer at various conditions, the effects of a few important material properties such as particle size, the Hamaker constant and particle thermal conductivity are examined through controlled numerical experiments. It is found that the convective heat transfer is dominant, and radiative heat transfer becomes important when the temperature is high. Conductive heat transfer also plays a role depending on the flow regimes and material properties. The heat transfer between a fluidized bed and an immersed surface is enhanced by the increase of particle thermal conductivity while it is little affected by Young s modulus. The findings should be useful for better understanding and predicting the heat transfer in gas fluidization.",
author = "Qinfu Hou and Zongyan Zhou and Aibing Yu",
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language = "English",
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volume = "1542",
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Hou, Q, Zhou, Z & Yu, A 2013, Computational study of heat transfer in gas fluidization. in A Yu, K Dong, R Yang & S Luding (eds), Powders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media. vol. 1542, American Institute of Physics, Melville NY USA, pp. 1114 - 1117, Powders and Grains 2013, Sydney, Australia, 8/07/13. https://doi.org/10.1063/1.4812131

Computational study of heat transfer in gas fluidization. / Hou, Qinfu; Zhou, Zongyan; Yu, Aibing.

Powders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media. ed. / Aibing Yu; Kejun Dong; Runyu Yang; Stefan Luding. Vol. 1542 Melville NY USA : American Institute of Physics, 2013. p. 1114 - 1117.

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

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AB - Heat transfer in gas fluidization is investigated at a particle scale by means of a combined discrete element method and computational fluid dynamicsapproach. To develop understanding of heat transfer at various conditions, the effects of a few important material properties such as particle size, the Hamaker constant and particle thermal conductivity are examined through controlled numerical experiments. It is found that the convective heat transfer is dominant, and radiative heat transfer becomes important when the temperature is high. Conductive heat transfer also plays a role depending on the flow regimes and material properties. The heat transfer between a fluidized bed and an immersed surface is enhanced by the increase of particle thermal conductivity while it is little affected by Young s modulus. The findings should be useful for better understanding and predicting the heat transfer in gas fluidization.

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Hou Q, Zhou Z, Yu A. Computational study of heat transfer in gas fluidization. In Yu A, Dong K, Yang R, Luding S, editors, Powders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media. Vol. 1542. Melville NY USA: American Institute of Physics. 2013. p. 1114 - 1117 https://doi.org/10.1063/1.4812131