Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Numerical Analysis of a Diffuser Flow with Expansion and Streamline Curvature

확대 및 유선곡률을 가진 디퓨저 흐름의 수치해석

  • 이연원 (부경대학교 기계자동차공학부, 열유체공학연구소)
  • Published : 1998.09.01
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Abstract

A diffuser an important equipment to change kinetic energy into pressure energy has been studied for a long time. Though experimental and theoretical researches habe been done the understanding of energy transfer and detailed mechanism of energy dissipation is unclear. As far as numerical prediction of diffuser flows are concerned various numerical studies have also been done. On the contrary many turbulence models have constraint to the applicability of diffuser-like flows with expansion and streamline curvature. In order to obtain the reliability of k-$\varepsilon$ turbulence model modified combination turbulence models composed of the anisotropic k-$\varepsilon$model modified combination turbulence models composed of the anisotropic k-$\varepsilon$ model with Hanjalic-Launder's preferential normal strain and Pope's vortex stretching mechanism are proposed. The results of the present proposed models prove the fact that the coefficient of pressure and the shear stress are well predicted at the diffuser flow.

Keywords

References

  1. J. Fluids mechanics v.57 Turbulence in a Conical Diffuser with Fully Developed Flow at Entry Okwuobi, P. A. C.;Azad, R. S.
  2. AIAA J. v.27 Calculation of Planar and Conical Diffuser Flows Lai, Y. G.;So, R. M. C.;Hwang, B. C.
  3. SEOSAN-KENKYU, IIS, Univ. of Tokyo v.44 Numerical Simulation of a Conical Diffuser by Using the General Curvilinear Coordinate System Lee, Y. W;Kobayashi, T
  4. AIAA J. v.24 Turbulence Modeling for Complex Shear Flows Lakshminarayana, B.
  5. J. Fluids Engng REVIEW-Complex Turbulent Flows Bradshaw, P.
  6. J. of fluids Engng v.102 Sensitizing the dissipation equation to irrotational strains Hanjalic, K.
  7. AIAA J. v.23 An Explanation of the Turbulent Round-Jet/Plane-Jet Anomaly Pope, S. B.
  8. Phys. Fluids A v.1 no.3 Turbulent Flow in a Conical Diffuser: Overview and Implications Azad, R. S.;Kassab, S. Z.
  9. JSME Introduction of Turbulence Model-Basic Idea, A report of the Evaluation and Establishment of Turbulence Models Kawamura, Y.
  10. J. of Fluids Engng v.108 Scrutinizing the k-ε Turbulence Model under Adverse Pressure Gradient Conditions Rodi, W.;Scheuerer, G.
  11. AIAA J. v.16 Comparison of Various Turbulence Models for the Calculation of Plane of Symmetry Flows Shon, C. H.(et al.)
  12. Ph. D. Dissertation, The University of Tokyo Fundamental Studies on Two Equation Turbulence Model for Numerical Predictions of Wall-Bounded Shear Flow and Heat Transfer Myong, H. K.
  13. AIAA Journal v.26 Near-Wall Turbulence Models for Complex Flows Including Separation Chen, H. C.;Patel, V. C.
  14. Ph. D. Thesis, Imperial College, Univ. of London A Finite Volume Method for the Prediction of Three-Dimensional Fluid Flow in Complex Ducts Peric, M.
  15. AIAA Journal v.22 Alternative Direction Adaptive Grid Generation Eiseman, P. R.
  16. NACA Rept. The Structure of Turbulence of Fully Developed Pipe Flow laufer, J.
  17. The 71th JSME Fall Annual Meeting v.3 Numerical Analysis of a Diffuser Flow Comparison and Verification of k-ε Turbulence Models Lee, Y. W.;Kobayashi, T.;Chung, B. S.
  18. Proc. of the 7th Biennial Symposium on Turbulence Turbulent Kinetic Energy Balance in a Conical Diffuser Singh, D.;Azad, R. S.
  19. Master Thesis, The University of Tokyo Numerical Analysis of Backward Facing Step Flow Using the Anisotropic k-ε Turbulence Model Oomachi, M.
  20. Proceeding of Turbulent Shear Flow Modeling the Dissipation Rate in Rotating Turbulent Flows Speziale, C. G.