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A new low Reynolds stress transport model for heat transfer and fluid in engineering applications

Jia, Rongguang LU ; Sundén, Bengt LU and Faghri, Mohammad (2007) In Journal of Heat Transfer 129(4). p.434-440
Abstract
A new Reynolds stress transport model (RSTM) aimed for engineering applications is proposed with consideration of near-wall turbulence. This model employs the Speziale, Sarkar and Gatski (SSG) pressure strain term, the omega equation, and the shear stress transport (SST) model for the shear stresses at the near-wall region (say, y(+) < 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 hectors; the omega equation can be integrated down to the wall without damping functions. The SST model is a proper two-equation model that performs wall for flows with adverse pressure gradient, while most two-equation models can have a good... (More)
A new Reynolds stress transport model (RSTM) aimed for engineering applications is proposed with consideration of near-wall turbulence. This model employs the Speziale, Sarkar and Gatski (SSG) pressure strain term, the omega equation, and the shear stress transport (SST) model for the shear stresses at the near-wall region (say, y(+) < 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 hectors; the omega equation can be integrated down to the wall without damping functions. The SST model is a proper two-equation model that performs wall 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: (i) fully developed channel flow with Re-tau=395, (ii) backward-facing step with an expansion* ratio of 1.2 and Re =5200 base on the step height, and (iii) circular impingement with the nozzle-to-wall distance H=4D and Re =20,000. It is believed that the new model has good applicability for complex flow fields. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Heat Transfer
volume
129
issue
4
pages
434 - 440
publisher
American Society Of Mechanical Engineers (ASME)
external identifiers
  • wos:000246438100004
  • scopus:34447647512
ISSN
0022-1481
DOI
10.1115/1.2709957
language
English
LU publication?
yes
id
8aa46e85-22a9-4b93-9f1d-fff7a97b3b95 (old id 660464)
date added to LUP
2016-04-01 16:59:02
date last changed
2022-01-28 23:33:51
@article{8aa46e85-22a9-4b93-9f1d-fff7a97b3b95,
  abstract     = {{A new Reynolds stress transport model (RSTM) aimed for engineering applications is proposed with consideration of near-wall turbulence. This model employs the Speziale, Sarkar and Gatski (SSG) pressure strain term, the omega equation, and the shear stress transport (SST) model for the shear stresses at the near-wall region (say, y(+) &lt; 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 hectors; the omega equation can be integrated down to the wall without damping functions. The SST model is a proper two-equation model that performs wall 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: (i) fully developed channel flow with Re-tau=395, (ii) backward-facing step with an expansion* ratio of 1.2 and Re =5200 base on the step height, and (iii) circular impingement with the nozzle-to-wall distance H=4D and Re =20,000. It is believed that the new model has good applicability for complex flow fields.}},
  author       = {{Jia, Rongguang and Sundén, Bengt and Faghri, Mohammad}},
  issn         = {{0022-1481}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{434--440}},
  publisher    = {{American Society Of Mechanical Engineers (ASME)}},
  series       = {{Journal of Heat Transfer}},
  title        = {{A new low Reynolds stress transport model for heat transfer and fluid in engineering applications}},
  url          = {{http://dx.doi.org/10.1115/1.2709957}},
  doi          = {{10.1115/1.2709957}},
  volume       = {{129}},
  year         = {{2007}},
}