Detached Eddy Simulation of a developing turbulent flow in a 270° curved duct

Jeong Sik Seo; Jong Keun Shin; Young Don Choi; Joo Cheol Lee

doi:10.3795/KSME-B.2008.32.6.471

Detached Eddy Simulation of a developing turbulent flow in a 270° curved duct

Jeong Sik Seo, Jong Keun Shin, Young Don Choi, Joo Cheol Lee

Honorary professors

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

Detached Eddy Simulation (DES) is performed for developing turbulent flow of the 270° curved duct at a Reynolds number of 56,690. The curvature ratio on the basis of a centric radius R_c and a duct height H is 3.357. Turbulence models adopted are k- ω model for Reynolds Average Navier-Stokes (RANS) equation Simulation and Shear Stress Transport (SST) model for DES. DES is used as the hybrid computation technique combined with RANS-SST and Large Eddy Simulation (LES). Predicted results are compared with measured results including the distributions of Reynolds stresses and the flow characteristics on the symmetric plane of curved duct are presented. Judging from the comparison between the predicted and the measured results, the DES approach is applicable to calculate the developing turbulent flow in a 270° curved duct.

Original language	English
Pages (from-to)	471-478
Number of pages	8
Journal	Transactions of the Korean Society of Mechanical Engineers, B
Volume	32
Issue number	6
DOIs	https://doi.org/10.3795/KSME-B.2008.32.6.471
Publication status	Published - 2008 Jun

Keywords

Curved duct
DES(Detached Eddy Simulation)
RANS(Reynolds Average Navier Stokes Equation Simulation)
Turbulent flow

ASJC Scopus subject areas

Mechanical Engineering

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Seo, J. S., Shin, J. K., Choi, Y. D., & Lee, J. C. (2008). Detached Eddy Simulation of a developing turbulent flow in a 270° curved duct. Transactions of the Korean Society of Mechanical Engineers, B, 32(6), 471-478. https://doi.org/10.3795/KSME-B.2008.32.6.471

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abstract = "Detached Eddy Simulation (DES) is performed for developing turbulent flow of the 270° curved duct at a Reynolds number of 56,690. The curvature ratio on the basis of a centric radius Rc and a duct height H is 3.357. Turbulence models adopted are k- ω model for Reynolds Average Navier-Stokes (RANS) equation Simulation and Shear Stress Transport (SST) model for DES. DES is used as the hybrid computation technique combined with RANS-SST and Large Eddy Simulation (LES). Predicted results are compared with measured results including the distributions of Reynolds stresses and the flow characteristics on the symmetric plane of curved duct are presented. Judging from the comparison between the predicted and the measured results, the DES approach is applicable to calculate the developing turbulent flow in a 270° curved duct.",

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