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Numerical study of swirling impinging jets with heat-transfer

Hällqvist, Tomas and Fuchs, Laszlo LU (2004) ASME Heat Transfer/Fluids Engineering Summer Conference, 2004 In [Host publication title missing]
Abstract
This paper deals with numerical simulations of circular impinging jets with heat transfer, by means of Large Eddy Simulation (LES). The LES code uses higher order finite-differences on staggered Cartesian non-uniform grids. The current LES have the potential of dealing with transition as well as providing data on details of larger scale structures, statistical correlations and turbulent spectral content. The impinging circular jet has a nozzle-to-plate spacing ranging from 0.5 to 2 nozzle diameters and the Reynolds number is 20000. Three different swirl numbers have been considered, ranging from non-swirling to strongly swirling flow. From the LES results the transition process in the jet is clearly detected. Swirling flow strongly... (More)
This paper deals with numerical simulations of circular impinging jets with heat transfer, by means of Large Eddy Simulation (LES). The LES code uses higher order finite-differences on staggered Cartesian non-uniform grids. The current LES have the potential of dealing with transition as well as providing data on details of larger scale structures, statistical correlations and turbulent spectral content. The impinging circular jet has a nozzle-to-plate spacing ranging from 0.5 to 2 nozzle diameters and the Reynolds number is 20000. Three different swirl numbers have been considered, ranging from non-swirling to strongly swirling flow. From the LES results the transition process in the jet is clearly detected. Swirling flow strongly influences the development of the jet. The wall heat transfer rates become obstructed, even though the turbulence level increases. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
[Host publication title missing]
publisher
American Soceity of Mechanical Engineers
conference name
ASME Heat Transfer/Fluids Engineering Summer Conference, 2004
external identifiers
  • Other:ASME paper no. HT-FED2004-56478
  • Scopus:21544446389
language
English
LU publication?
yes
id
7ec65103-4b03-4ad8-9a5e-cb21c632d9f3 (old id 834954)
date added to LUP
2008-02-27 10:55:35
date last changed
2016-10-13 04:44:29
@misc{7ec65103-4b03-4ad8-9a5e-cb21c632d9f3,
  abstract     = {This paper deals with numerical simulations of circular impinging jets with heat transfer, by means of Large Eddy Simulation (LES). The LES code uses higher order finite-differences on staggered Cartesian non-uniform grids. The current LES have the potential of dealing with transition as well as providing data on details of larger scale structures, statistical correlations and turbulent spectral content. The impinging circular jet has a nozzle-to-plate spacing ranging from 0.5 to 2 nozzle diameters and the Reynolds number is 20000. Three different swirl numbers have been considered, ranging from non-swirling to strongly swirling flow. From the LES results the transition process in the jet is clearly detected. Swirling flow strongly influences the development of the jet. The wall heat transfer rates become obstructed, even though the turbulence level increases.},
  author       = {Hällqvist, Tomas and Fuchs, Laszlo},
  language     = {eng},
  publisher    = {ARRAY(0x8a087b0)},
  series       = {[Host publication title missing]},
  title        = {Numerical study of swirling impinging jets with heat-transfer},
  year         = {2004},
}