Numerical study of heat transfer in gravity-driven dense particle flow around a hexagonal tube
(2020) In Powder Technology 367. p.285-295- Abstract
In the present paper, the heat transfer of gravity-driven dense particle flow around a hexagonal tube is numerically studied. The velocity vector, time-averaged particle contacting number, particle contacting time and heat transfer coefficient of particle flow are carfully analyzed. Furthermore, the heat transfer performances of particle flow around a hexagonal tube, circular tube and elliptical tube are also compared. The results show that, the effect of top angle (Θ) on the particle flow around a hexagonal tube is noticeable. When Θ decreases from 120° to 60° (vout = 2 mm/s), the averaged heat transfer coefficient of particle flow would increase by 29.7%. The heat transfer performances of particle flow around different... (More)
In the present paper, the heat transfer of gravity-driven dense particle flow around a hexagonal tube is numerically studied. The velocity vector, time-averaged particle contacting number, particle contacting time and heat transfer coefficient of particle flow are carfully analyzed. Furthermore, the heat transfer performances of particle flow around a hexagonal tube, circular tube and elliptical tube are also compared. The results show that, the effect of top angle (Θ) on the particle flow around a hexagonal tube is noticeable. When Θ decreases from 120° to 60° (vout = 2 mm/s), the averaged heat transfer coefficient of particle flow would increase by 29.7%. The heat transfer performances of particle flow around different shape tubes are quite different. When Θ equals 60° (vout = 2 mm/s), as compared with circular tube, the averaged heat transfer coefficient of particle flow around an elliptical tube and a hexagonal tube increases by 17.2% and 20.5%, respectively.
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- author
- Tian, Xing ; Yang, Jian LU ; Guo, Zhigang ; Wang, Qiuwang and Sunden, Bengt LU
- organization
- publishing date
- 2020-05
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Discrete element method, Gravity-driven dense particle flow, Heat transfer, Hexagonal tube
- in
- Powder Technology
- volume
- 367
- pages
- 11 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:85082670511
- ISSN
- 0032-5910
- DOI
- 10.1016/j.powtec.2020.04.001
- language
- English
- LU publication?
- yes
- id
- 7331801f-8b62-4dc9-a8e0-479f7c29833c
- date added to LUP
- 2020-04-16 16:52:50
- date last changed
- 2023-11-20 03:03:13
@article{7331801f-8b62-4dc9-a8e0-479f7c29833c,
abstract = {{<p>In the present paper, the heat transfer of gravity-driven dense particle flow around a hexagonal tube is numerically studied. The velocity vector, time-averaged particle contacting number, particle contacting time and heat transfer coefficient of particle flow are carfully analyzed. Furthermore, the heat transfer performances of particle flow around a hexagonal tube, circular tube and elliptical tube are also compared. The results show that, the effect of top angle (Θ) on the particle flow around a hexagonal tube is noticeable. When Θ decreases from 120° to 60° (v<sub>out</sub> = 2 mm/s), the averaged heat transfer coefficient of particle flow would increase by 29.7%. The heat transfer performances of particle flow around different shape tubes are quite different. When Θ equals 60° (v<sub>out</sub> = 2 mm/s), as compared with circular tube, the averaged heat transfer coefficient of particle flow around an elliptical tube and a hexagonal tube increases by 17.2% and 20.5%, respectively.</p>}},
author = {{Tian, Xing and Yang, Jian and Guo, Zhigang and Wang, Qiuwang and Sunden, Bengt}},
issn = {{0032-5910}},
keywords = {{Discrete element method; Gravity-driven dense particle flow; Heat transfer; Hexagonal tube}},
language = {{eng}},
pages = {{285--295}},
publisher = {{Elsevier}},
series = {{Powder Technology}},
title = {{Numerical study of heat transfer in gravity-driven dense particle flow around a hexagonal tube}},
url = {{http://dx.doi.org/10.1016/j.powtec.2020.04.001}},
doi = {{10.1016/j.powtec.2020.04.001}},
volume = {{367}},
year = {{2020}},
}