Turbulent flow and heat transfer in a square-sectioned U-bend
Författare
Summary, in English
Turbulent flow and heat transfer in a square-sectioned U-bend are investigated. Turbulence models with linear and non-linear expressions for the Reynolds stresses are used. The near wall turbulence is treated by the damping functions approach and a two-layer model with Wolfshtein's sub-layer treatment. The inlet conditions have a significant effect on the predictions. The results from the non-linear low-Reynolds number k-epsilon models including Suga's cubic low-Re model were closest to experimental data. These models predicted the stress-induced secondary motion in the straight inlet duct well. This secondary motion had a small impact on the flow in the bend.
Avdelning/ar
Publiceringsår
2006
Språk
Engelska
Sidor
89-100
Publikation/Tidskrift/Serie
Progress in Computational Fluid Dynamics, An International Journal
Volym
6
Issue
1-3
Dokumenttyp
Artikel i tidskrift
Förlag
Inderscience Publishers
Ämne
- Energy Engineering
Nyckelord
- secondary
- flow
- turbulence models
- computation
- curved duct
- heat transfer
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1741-5233