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종방향 와동과 난류경계층의 상호작용에 관한 수치해석
Numerical Simulation on Interactions of Longitudinal Vortices in a Turbulent Boundary Layer

양장식   (㈜기경 IE&C. 환경에너지 신기술 개발연구소  );
  • 초록

    This paper describes the numerical simulation of the interaction between longitudinal vortices ("common flow up") and a 3-D turbulent boundary layer over a flat plate To analyze the common flow up Produced from vortex generators. the flow field behind the vortex generators Is modeled by the information that is available from studies on a half-delta winglet. Also. the Reynolds-averaged Navier-Stokes equation for three-dimensional turbulent flows. together with a two-layer turbulence model to resolve the near-wall flow, is solved by the method of AF-ADI. The computational results predict that the boundary layer is thinned in the regions where the secondary flow is directed toward the wall and thickened where it is directed away from the wall Also. the numerical results. such as Reynolds stresses. turbulent kinetic energy and skin friction characteristics generated from the vortex generators . are reasonably close to the experimental data.


  • 주제어

    종방향 와동 .   와동발생기 .   수치해석 .   반삼각익.  

  • 참고문헌 (14)

    1. B. J. Wendt and W. R. Hingst, 'Flow Structure in the Wake of a Wishbone Vortex Generator,' AIAA Journal, Vol. 32, No. 11, pp. 2234-2240, 1993 
    2. 박원규, 전산유체역학 강의노트 I, II, 부산대학교, 1997 
    3. M. Fiebig, 'Vortices and Heat Transfer,' Zeitschrift fur Angewandte Mathematik und Mechanik, Vol. 77, No. 1, pp. 3-18, 1997 
    4. J. P. Johnston, 'On the Three-Dimensional Turbulent Boundary Layer Generated by Secondary Flow,' Journal of Basic Engineering, pp. 233-248, 1960 
    5. B. A. Reichert and B. J. Wendt, 'An Experimental Investigation off S-Duct Flow Control Using Arrays of Low Profile Vortex Generations,' AIAA Paper 93-0019, 1993 
    6. H. C. Chen and V. C. Patel, 'Practical near Wall Turbulence Model for Complex Flow Including Separation,' AIAA Paper 87-1300, 1987 
    7. J. X. Zhu, M. Fiebig and N. K. Mitra, 'Numerical Investigation of Turbulent Flows and Heat Transfer in a Rib-Roughened Channel with Longitudinal Vortex Generators,' International Journal of Heat and Mass Transfer, Vol.38, No. 3, pp. 495-501, 1995 
    8. W. J. Kim and V. C. Patel, 'Influence of Streamwise Curvature on Longitudinal Vortices Imbedded in Turbulent Boundary Layers,' Journal of Computers Fluid, Vol. 23, No. 5, pp. 647-673, 1994 
    9. W. R. C. Phillips and J. A. H. Graham, 'Reynolds Stress Measurements in a Turbulent Trailing Vortex,' Journal of Fluid Mechanics, Vol. 147, pp. 353-371, 1984 
    10. 김정한, 양장식, 김봉환, 이기백, '주유동방향 와동과 난류경계층과의 상호작용에 관한 수치적 연구,' 한국박용기관학회, 제24권, 제1호. pp. 31-40. 2000 
    11. M. V. Lowson, 'Visualization Measurements of Vortex Flows,' AIAA paper 89-0191, 1981 
    12. W. R. Pauley and J. K. Eaton. 'The Fluid Dynamics and Heat Transfer Effects of Streamwise Vortices Embedded in a Turbulent Boundary Layer,' Report No. MD-51, Department of Mechanical Engineering, Stanford University, 1988 
    13. J. Q. Kim, H. S. Ryou, J. Y. Jeong and V. Dedousis, 'Numerical Simulation of 3-D Turbulent Flows with Imbedded Longitudinal Vortex,' Computational Fluid Dynamics Journal, Vol. 4, No. 4, pp. 473-488, 1996 
    14. B. H. Anderson and J. Gibb, 'Application of Computational Fluid Dynamics to the Study of Vortex Flow Control for the Management of Inlet Distortion,' AIAA paper 92-3177, 1992 

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