Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Transient Flow and Heat Transfer in a Horizontal Rectangular Channel Considering Thermal-Fluid-Structure Interaction

Li, Yong LU orcid ; Xie, Gongnan LU ; Fu, Jiahong LU ; Zhang, Bolun LU and Sunden, Bengt LU (2022) In Journal of Energy Resources Technology, Transactions of the ASME 144(11).
Abstract

For the supercritical n-decane horizontally flowing in a rectangular channel of an active regenerative cooling system, a transient thermal-fluid-structure coupling method is employed to investigate the unsteady thermal-hydraulic characteristics and the wall deformation at a starting stage. The temperature distributions of the fluid domain and solid domain along the flow direction are investigated at fixed times as well as at a certain cross section. Streamlines in cross sections are employed to explain the temperature distribution. The velocity and pressure at a fixed point versus time are also given. Besides, the solid deformation is presented according to the uneven pressure distribution and temperature distribution. It is found that... (More)

For the supercritical n-decane horizontally flowing in a rectangular channel of an active regenerative cooling system, a transient thermal-fluid-structure coupling method is employed to investigate the unsteady thermal-hydraulic characteristics and the wall deformation at a starting stage. The temperature distributions of the fluid domain and solid domain along the flow direction are investigated at fixed times as well as at a certain cross section. Streamlines in cross sections are employed to explain the temperature distribution. The velocity and pressure at a fixed point versus time are also given. Besides, the solid deformation is presented according to the uneven pressure distribution and temperature distribution. It is found that the response time is less than 30 s when the heat flux is less than 3.0 MW/m2. A larger heat flux contributes to promoting the steady state. The high-temperature part of the solid domain is close to the heated wall, but the situation is reversed for the fluid domain. This is because a bunch of dead-zone vortices appears in the vicinity of the upper wall of the channel. The maximum deformation is 0.132 mm for the condition of heat flux 3.0 MW/m2 and it is exacerbated by the uneven temperature and pressure distributions on the solid domain.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
dead-zone vortices, energy conversion/systems, heat energy generation/storage/transfer, response time, solid deformation, transient thermal-fluid-structure coupling
in
Journal of Energy Resources Technology, Transactions of the ASME
volume
144
issue
11
article number
112107
publisher
American Society Of Mechanical Engineers (ASME)
external identifiers
  • scopus:85144605517
ISSN
0195-0738
DOI
10.1115/1.4054402
language
English
LU publication?
yes
id
bc33d8f1-0219-4556-a838-7d1feb618f32
date added to LUP
2023-01-11 16:14:12
date last changed
2023-11-21 13:05:23
@article{bc33d8f1-0219-4556-a838-7d1feb618f32,
  abstract     = {{<p>For the supercritical n-decane horizontally flowing in a rectangular channel of an active regenerative cooling system, a transient thermal-fluid-structure coupling method is employed to investigate the unsteady thermal-hydraulic characteristics and the wall deformation at a starting stage. The temperature distributions of the fluid domain and solid domain along the flow direction are investigated at fixed times as well as at a certain cross section. Streamlines in cross sections are employed to explain the temperature distribution. The velocity and pressure at a fixed point versus time are also given. Besides, the solid deformation is presented according to the uneven pressure distribution and temperature distribution. It is found that the response time is less than 30 s when the heat flux is less than 3.0 MW/m<sup>2</sup>. A larger heat flux contributes to promoting the steady state. The high-temperature part of the solid domain is close to the heated wall, but the situation is reversed for the fluid domain. This is because a bunch of dead-zone vortices appears in the vicinity of the upper wall of the channel. The maximum deformation is 0.132 mm for the condition of heat flux 3.0 MW/m<sup>2</sup> and it is exacerbated by the uneven temperature and pressure distributions on the solid domain.</p>}},
  author       = {{Li, Yong and Xie, Gongnan and Fu, Jiahong and Zhang, Bolun and Sunden, Bengt}},
  issn         = {{0195-0738}},
  keywords     = {{dead-zone vortices; energy conversion/systems; heat energy generation/storage/transfer; response time; solid deformation; transient thermal-fluid-structure coupling}},
  language     = {{eng}},
  number       = {{11}},
  publisher    = {{American Society Of Mechanical Engineers (ASME)}},
  series       = {{Journal of Energy Resources Technology, Transactions of the ASME}},
  title        = {{Transient Flow and Heat Transfer in a Horizontal Rectangular Channel Considering Thermal-Fluid-Structure Interaction}},
  url          = {{http://dx.doi.org/10.1115/1.4054402}},
  doi          = {{10.1115/1.4054402}},
  volume       = {{144}},
  year         = {{2022}},
}