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Heat transfer study on a hybrid smooth and spirally corrugated tube

Yang, Chen; Chen, Min Rui; Qian, Jin Yuan LU ; Wu, Zan LU ; Jin, Zhi Jiang and Sunden, Bengt LU (2018) 11th International Conference on Computational Heat, Mass and Momentum Transfer, ICCHMT 2018 In MATEC Web of Conferences 240.
Abstract

Corrugated tubes are widely used in a range of applications for heat transfer enhancement. The spirally corrugated tube has a better heat transfer performance than the smooth tube. In this paper, the heat transfer performance of a hybrid smooth and six-start spirally corrugated tube is studied. With a validated numerical model, the effects of the corrugation part length on the vortex in the downstream smooth tube are studied for a range of high Reynolds numbers, where the existence of the corrugation part can turn out the secondary flow and enhance heat transfer. Meanwhile, it is found that in the smooth part, the fluid flow part with whirling can reach a maximum length, even if the length of the corrugation part continuously increases.... (More)

Corrugated tubes are widely used in a range of applications for heat transfer enhancement. The spirally corrugated tube has a better heat transfer performance than the smooth tube. In this paper, the heat transfer performance of a hybrid smooth and six-start spirally corrugated tube is studied. With a validated numerical model, the effects of the corrugation part length on the vortex in the downstream smooth tube are studied for a range of high Reynolds numbers, where the existence of the corrugation part can turn out the secondary flow and enhance heat transfer. Meanwhile, it is found that in the smooth part, the fluid flow part with whirling can reach a maximum length, even if the length of the corrugation part continuously increases. Thus a series of critical corrugation lengths can be obtained. This work can reveal the enhanced heat transfer mechanism of the hybrid smooth and spirally corrugated tube and be of interest to researchers in heat transfer issues of corrugated tubes.

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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
XI International Conference on Computational Heat, Mass and Momentum Transfer (ICCHMT 2018)
series title
MATEC Web of Conferences
volume
240
publisher
EDP Sciences
conference name
11th International Conference on Computational Heat, Mass and Momentum Transfer, ICCHMT 2018
conference location
Cracow, Poland
conference dates
2018-05-21 - 2018-05-24
external identifiers
  • scopus:85058209451
DOI
10.1051/matecconf/201824001038
language
English
LU publication?
yes
id
2546371d-6c65-462f-861c-9d1b544b24d8
date added to LUP
2019-01-04 12:35:28
date last changed
2019-01-04 12:35:28
@inproceedings{2546371d-6c65-462f-861c-9d1b544b24d8,
  abstract     = {<p>Corrugated tubes are widely used in a range of applications for heat transfer enhancement. The spirally corrugated tube has a better heat transfer performance than the smooth tube. In this paper, the heat transfer performance of a hybrid smooth and six-start spirally corrugated tube is studied. With a validated numerical model, the effects of the corrugation part length on the vortex in the downstream smooth tube are studied for a range of high Reynolds numbers, where the existence of the corrugation part can turn out the secondary flow and enhance heat transfer. Meanwhile, it is found that in the smooth part, the fluid flow part with whirling can reach a maximum length, even if the length of the corrugation part continuously increases. Thus a series of critical corrugation lengths can be obtained. This work can reveal the enhanced heat transfer mechanism of the hybrid smooth and spirally corrugated tube and be of interest to researchers in heat transfer issues of corrugated tubes.</p>},
  author       = {Yang, Chen and Chen, Min Rui and Qian, Jin Yuan and Wu, Zan and Jin, Zhi Jiang and Sunden, Bengt},
  booktitle    = {MATEC Web of Conferences},
  language     = {eng},
  location     = {Cracow, Poland},
  month        = {11},
  publisher    = {EDP Sciences},
  title        = {Heat transfer study on a hybrid smooth and spirally corrugated tube},
  url          = {http://dx.doi.org/10.1051/matecconf/201824001038},
  volume       = {240},
  year         = {2018},
}