A low-re RSTM model for computations of heat transfer and fluid flow for impingement and convective cooling
(2004) 2004 ASME Turbo Expo 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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/614494
- author
- Jia, Rongguang LU and Sundén, Bengt LU
- organization
- publishing date
- 2004
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Stagnation region, Reynold stress, Impingment, Convective cooling, Cooling ducts
- host publication
- 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
- conference location
- Vienna, Austria
- conference dates
- 2004-06-14 - 2004-06-17
- external identifiers
-
- scopus:10244264782
- language
- English
- LU publication?
- yes
- id
- feef13ee-038e-4406-b4c7-0af41ed57577 (old id 614494)
- date added to LUP
- 2016-04-04 11:19:59
- date last changed
- 2022-01-29 21:41:48
@inproceedings{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<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.}}, author = {{Jia, Rongguang and Sundén, Bengt}}, booktitle = {{Proceedings of the ASME Turbo Expo 2004}}, keywords = {{Stagnation region; Reynold stress; Impingment; Convective cooling; Cooling ducts}}, language = {{eng}}, pages = {{429--438}}, publisher = {{American Society Of Mechanical Engineers (ASME)}}, title = {{A low-re RSTM model for computations of heat transfer and fluid flow for impingement and convective cooling}}, volume = {{3}}, year = {{2004}}, }