Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
권호 표지

Numerical Computations of Turbulent Flow in a $90^{\circ}$ Curved Duct Using a Modified Extended $k-\varepsilon$ Turbulence Model

수정된 Extendel $k-\varepsilon$ 난류모델을 사용한 $90^{\circ}$곡관 내의 난류유동에 관한 수치해석적 연구

  • Published : 1996.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

An extended $k-\varepsilon$ tuebulence model modified by considering the streamline curvature effect and standard $k-\varepsilon$ turbulence model have been applied for three dimensional analysis of turbulece flow in a $90^{\circ}$ curved duct. By comparision of the results with the experimental data, the modified extended $k-\varepsilon$ model gave closer agreement with experimental data than the results from standard $k-\varepsilon$ model owing to an extra time scale of the production rate and parameter describing effects of streamline curvature included in the dissipation rate equation.

Keywords

References

  1. Mathematical Models of Turbulence Launder, B. E.;Spalding, D. B.
  2. Trans. ASME, J. Fluids Eng v.99 The Calculation of Turbulent Boundary Layers on Spinning and Curved Surfaces B. E. Launder;C. H. Pridding;B. I. Sharma
  3. Trans. ASME, J. Fluids Eng v.109 Calculation of Annular and Twin Parallel Jets Using various Discretization Schemes and Turbulence Model Variation Leschziner, M. A.;Rodi, W
  4. Trans. ASME v.102 Sensitizing of Dissipation Equation to Irrotational Strains Hanjalic, K.;Launder, B. E.
  5. NASA CR-179204 Computation of Turbulent Flows Using an Extended k-ε Turbulence Closer Model Chen, Y. S.;Kim, S. W.
  6. Imperial College Mechanical Enginering Department, Report HTS/75/18 Measurement of the turbulent Flow in a Rectangular Curved Duct J. H. G. Howard;U. S. Paratap;D. B. Spalding
  7. 대한기계학회 논문집 v.18 no.11 수정난류모델에 의한 후향계단 유동예측 명현국;한화택;백인철
  8. Numerical Heat Transfer and Fluid Flow Patankar, S. V.
  9. The Aeronautial Quarterly v.26 Numerical Computations of the Flow in Curved Ducts V. S. Pratap;D. B. Spalding
  10. Journal of Heat Transfer v.116 Heat Transfer Predictions with Extended K-ε Turbulence Model in Radial Cooling Ducts Rotating in Orthogonal Mode P. Tekriwal