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

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1 Citation (Scopus)


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.

Original languageEnglish
Pages (from-to)471-478
Number of pages8
JournalTransactions of the Korean Society of Mechanical Engineers, B
Issue number6
Publication statusPublished - 2008 Jun


  • 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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