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Heat transfer analysis on dimple geometries and arrangements in dimple jacketed heat exchanger

Qian, Jy LU ; Wu, Zan LU ; Zhang, Qian Kun ; Jin, Zhi Jiang and Sunden, Bengt Ake LU (2019) In International Journal of Numerical Methods for Heat and Fluid Flow 29(8). p.2775-2791
Abstract

Purpose: The purpose of this paper is to study the effects of dimple geometries and arrangements on the heat transfer enhancement in a dimple jacketed heat exchanger. Design/methodology/approach: For the purpose of this paper, with the experimental validated numerical model, this paper carries out numerical simulations of both single dimples with different geometries and the whole dimple jacketed heat exchanger with different dimple arrangements. For a single dimple, its secondary vortex flow, temperature differences and the pressure drop performance for different geometries are analyzed. For the whole dimple jacketed heat exchanger, the heat transfer and pressure drop performances are investigated by comparing the no dimple, triangular... (More)

Purpose: The purpose of this paper is to study the effects of dimple geometries and arrangements on the heat transfer enhancement in a dimple jacketed heat exchanger. Design/methodology/approach: For the purpose of this paper, with the experimental validated numerical model, this paper carries out numerical simulations of both single dimples with different geometries and the whole dimple jacketed heat exchanger with different dimple arrangements. For a single dimple, its secondary vortex flow, temperature differences and the pressure drop performance for different geometries are analyzed. For the whole dimple jacketed heat exchanger, the heat transfer and pressure drop performances are investigated by comparing the no dimple, triangular and rectangular dimple arrangements. Findings: Results show that dimples can improve the heat transfer efficiency compared with conventional jacketed heat exchanger, and specific geometries and arrangement of dimples for better heat transfer performance are figured out. Originality/value: This paper considers both dimple geometries and arrangements, which can be useful for further applications in specific integrated devices or similar applications.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Computational fluid dynamics, Dimple arrangements, Dimple jacketed heat exchanger, Geometric parameter, Heat transfer
in
International Journal of Numerical Methods for Heat and Fluid Flow
volume
29
issue
8
pages
2775 - 2791
publisher
Emerald Group Publishing Limited
external identifiers
  • scopus:85071556837
ISSN
0961-5539
DOI
10.1108/HFF-12-2018-0792
language
English
LU publication?
yes
id
d4750b40-d5b5-4b7f-9043-ab7694307152
date added to LUP
2019-09-23 13:23:01
date last changed
2020-03-24 07:03:44
@article{d4750b40-d5b5-4b7f-9043-ab7694307152,
  abstract     = {<p>Purpose: The purpose of this paper is to study the effects of dimple geometries and arrangements on the heat transfer enhancement in a dimple jacketed heat exchanger. Design/methodology/approach: For the purpose of this paper, with the experimental validated numerical model, this paper carries out numerical simulations of both single dimples with different geometries and the whole dimple jacketed heat exchanger with different dimple arrangements. For a single dimple, its secondary vortex flow, temperature differences and the pressure drop performance for different geometries are analyzed. For the whole dimple jacketed heat exchanger, the heat transfer and pressure drop performances are investigated by comparing the no dimple, triangular and rectangular dimple arrangements. Findings: Results show that dimples can improve the heat transfer efficiency compared with conventional jacketed heat exchanger, and specific geometries and arrangement of dimples for better heat transfer performance are figured out. Originality/value: This paper considers both dimple geometries and arrangements, which can be useful for further applications in specific integrated devices or similar applications.</p>},
  author       = {Qian, Jy and Wu, Zan and Zhang, Qian Kun and Jin, Zhi Jiang and Sunden, Bengt Ake},
  issn         = {0961-5539},
  language     = {eng},
  month        = {07},
  number       = {8},
  pages        = {2775--2791},
  publisher    = {Emerald Group Publishing Limited},
  series       = {International Journal of Numerical Methods for Heat and Fluid Flow},
  title        = {Heat transfer analysis on dimple geometries and arrangements in dimple jacketed heat exchanger},
  url          = {http://dx.doi.org/10.1108/HFF-12-2018-0792},
  doi          = {10.1108/HFF-12-2018-0792},
  volume       = {29},
  year         = {2019},
}