KSME International Journal

, Volume 14, Issue 1, pp 93–102 | Cite as

Comparison of two-equation model and reynolds stress models with experimental data for the three-dimensional turbulent boundary layer in a 30 degree bend

  • Insub Lee
  • Hong Sun Ryou
  • Seong Hyuk Lee
  • Soo Chae
Thermal Engineering · Fluid Engineering · Energy and Power Engineering


The objective of the present study is to investigate the pressure-strain correlation terms of the Reynolds stress models for the three dimensional turbulent boundary layer in a 30° bend tunnel. The numerical results obtained by models of Launder, Reece and Rodi (LRR), Fu and Speziale, Sarkar and Gatski (SSG) for the pressure-strain correlation terms are compared against experimental data and the calculated results from the standard k-ε model. The governing equations are discretized by the finite volume method and SIMPLE algorithm is used to calculate the presure field. The results show that the models of LRR and SSG predict the anisotropy of turbulent structure better than the standard k-ε model. Also, the results obtained from the LRR and SSG models are in better agreement with the experimental data than those of the Fu and standard k-ε models with regard to turbulent normal stresses. Nevertheless, LRR and SSG models do not effectively predict pressure-strain redistribution terms in the inner layer because the pressure-strain terms are based on the locally homogeneous approximation. Therefore, to give better predictions of the pressure-strain terms, non-local effects should be considered.

Key Words

Pressure-Strain Correlation Terms Reynolds Stress Model (RSM) Three Dimensional Turbulent Boundary Layer (3DTBL) Anisotropy Turbulent Normal Stress 


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Copyright information

© The Korean Society of Mechanical Engineers (KSME) 2000

Authors and Affiliations

  • Insub Lee
    • 1
  • Hong Sun Ryou
    • 1
  • Seong Hyuk Lee
    • 2
  • Soo Chae
    • 3
  1. 1.Department of Mechanical EngineeringChung-Ang UniversitySeoulKorea
  2. 2.Research Institute of Production EngineeringChung-Ang UniversityKorea
  3. 3.Kun-Jang CollegeKorea

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