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Numerical investigation of impingement cooling in ribbed ducts due to jet arrays

Jia, Rongguang LU ; Rokni, Masoud LU and Sundén, Bengt LU (2003) In Journal of Enhanced Heat Transfer 10(3). p.243-255
Abstract
A numerical investigation of impingement heat transfer and fluid flow in a rectangular two-pass duct was carried out. The impingement wall was smooth or with periodically mounted square ribs. A multiblock parallel CFD code was employed for the calculation. The turbulence modeling was treated by applying a low Reynolds number turbulence eddy viscosity model (LEVM) and a V2F model. First, the calculations were validated against available experimental data in a two-pass duct where the impingement wall was smooth. Then, jets impinging on ribbed walls were simulated. The distance from the nozzle to the impingement wall was fixed at four nozzle diameters (d). The square rib width was set as 0.5 d. The duct inlet Reynolds number was fixed at... (More)
A numerical investigation of impingement heat transfer and fluid flow in a rectangular two-pass duct was carried out. The impingement wall was smooth or with periodically mounted square ribs. A multiblock parallel CFD code was employed for the calculation. The turbulence modeling was treated by applying a low Reynolds number turbulence eddy viscosity model (LEVM) and a V2F model. First, the calculations were validated against available experimental data in a two-pass duct where the impingement wall was smooth. Then, jets impinging on ribbed walls were simulated. The distance from the nozzle to the impingement wall was fixed at four nozzle diameters (d). The square rib width was set as 0.5 d. The duct inlet Reynolds number was fixed at 10,000. Results show that the presence of ribs was favorable for the heat transfer enhancement on the impingement wall, but not for the side wall. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
turbulent heat transfer, impingement jet, rib roughness enhancement, two-pass duct
in
Journal of Enhanced Heat Transfer
volume
10
issue
3
pages
243 - 255
publisher
Begell House
external identifiers
  • wos:000220953900001
  • scopus:1542393554
ISSN
1563-5074
DOI
language
English
LU publication?
yes
id
aafcfd32-d3b5-4269-b6bc-8b1f2f1f2ad0 (old id 280970)
date added to LUP
2007-09-13 13:21:45
date last changed
2018-05-29 11:14:01
@article{aafcfd32-d3b5-4269-b6bc-8b1f2f1f2ad0,
  abstract     = {A numerical investigation of impingement heat transfer and fluid flow in a rectangular two-pass duct was carried out. The impingement wall was smooth or with periodically mounted square ribs. A multiblock parallel CFD code was employed for the calculation. The turbulence modeling was treated by applying a low Reynolds number turbulence eddy viscosity model (LEVM) and a V2F model. First, the calculations were validated against available experimental data in a two-pass duct where the impingement wall was smooth. Then, jets impinging on ribbed walls were simulated. The distance from the nozzle to the impingement wall was fixed at four nozzle diameters (d). The square rib width was set as 0.5 d. The duct inlet Reynolds number was fixed at 10,000. Results show that the presence of ribs was favorable for the heat transfer enhancement on the impingement wall, but not for the side wall.},
  author       = {Jia, Rongguang and Rokni, Masoud and Sundén, Bengt},
  issn         = {1563-5074},
  keyword      = {turbulent heat transfer,impingement jet,rib roughness enhancement,two-pass duct},
  language     = {eng},
  number       = {3},
  pages        = {243--255},
  publisher    = {Begell House},
  series       = {Journal of Enhanced Heat Transfer},
  title        = {Numerical investigation of impingement cooling in ribbed ducts due to jet arrays},
  url          = {http://dx.doi.org/},
  volume       = {10},
  year         = {2003},
}