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A low-re RSTM model for computations of heat transfer and fluid flow for impingement and convective cooling

Jia, Rongguang LU and Sundén, Bengt LU (2004) 2004 ASME Turbo Expo In Proceedings of the ASME Turbo Expo 2004 3. p.429-438
Abstract
A new Reynolds stress transport model (RSTM) aimed for engineering applications is proposed with consideration of near-wall turbulence. This model employs the SSG pressure strain term, the ω equation, and the SST model for the shear stresses at the near-wall region (say y<sup>+</sup> less than or equal 30). The models are selected based on the following merits: The SSG RSTM model performs well in the fully turbulent region and does not need the wall normal vectors; the ω equation can be integrated down to the wall without damping functions; The SST model is a proper two-equation model that performs well for flows with adverse pressure gradient, while most two-equation models can have a good prediction of the shear stresses. A... (More)
A new Reynolds stress transport model (RSTM) aimed for engineering applications is proposed with consideration of near-wall turbulence. This model employs the SSG pressure strain term, the ω equation, and the SST model for the shear stresses at the near-wall region (say y<sup>+</sup> less than or equal 30). The models are selected based on the following merits: The SSG RSTM model performs well in the fully turbulent region and does not need the wall normal vectors; the ω equation can be integrated down to the wall without damping functions; The SST model is a proper two-equation model that performs well for flows with adverse pressure gradient, while most two-equation models can have a good prediction of the shear stresses. A function is selected for the blending of the RSTM and SST. Three cases are presented to show the performance of the present model: (1) fully developed channel flow with Reτ = 395, (2) backward-facing step with an expansion ratio of 1.2 and Re = 5,200 base on the step height, (3) circular impingement with the nozzle-to-wall distance H = 4D and Re = 20,000. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Stagnation region, Reynold stress, Impingment, Convective cooling, Cooling ducts
in
Proceedings of the ASME Turbo Expo 2004
volume
3
pages
429 - 438
publisher
American Society Of Mechanical Engineers (ASME)
conference name
2004 ASME Turbo Expo
external identifiers
  • Scopus:10244264782
language
English
LU publication?
yes
id
feef13ee-038e-4406-b4c7-0af41ed57577 (old id 614494)
date added to LUP
2007-11-26 19:56:50
date last changed
2016-10-13 04:45:10
@misc{feef13ee-038e-4406-b4c7-0af41ed57577,
  abstract     = {A new Reynolds stress transport model (RSTM) aimed for engineering applications is proposed with consideration of near-wall turbulence. This model employs the SSG pressure strain term, the ω equation, and the SST model for the shear stresses at the near-wall region (say y&lt;sup&gt;+&lt;/sup&gt; less than or equal 30). The models are selected based on the following merits: The SSG RSTM model performs well in the fully turbulent region and does not need the wall normal vectors; the ω equation can be integrated down to the wall without damping functions; The SST model is a proper two-equation model that performs well for flows with adverse pressure gradient, while most two-equation models can have a good prediction of the shear stresses. A function is selected for the blending of the RSTM and SST. Three cases are presented to show the performance of the present model: (1) fully developed channel flow with Reτ = 395, (2) backward-facing step with an expansion ratio of 1.2 and Re = 5,200 base on the step height, (3) circular impingement with the nozzle-to-wall distance H = 4D and Re = 20,000.},
  author       = {Jia, Rongguang and Sundén, Bengt},
  keyword      = {Stagnation region,Reynold stress,Impingment,Convective cooling,Cooling ducts},
  language     = {eng},
  pages        = {429--438},
  publisher    = {ARRAY(0x88c3b80)},
  series       = {Proceedings of the ASME Turbo Expo 2004},
  title        = {A low-re RSTM model for computations of heat transfer and fluid flow for impingement and convective cooling},
  volume       = {3},
  year         = {2004},
}