A Numerical Analysis of Streamwise Vortices in Turbulent Boundary Layers

주유동방향 와동과 난류경계층과의 상호작용에 관한 수치적 연구

  • 김정한 (부산대학교 기계공학과 대학원) ;
  • 양장식 (부산대학교 기계공학부 및 기계기술연구소) ;
  • 김봉환 (양산대학 기계설비과) ;
  • 이기백 (부산대학교 기계공학부 및 기계기술연구소)
  • Published : 2000.01.01

Abstract

This paper describes the numerical computations of the interaction between the streamwise vortex and a flat plate 3-D turbulent boundary layer. In the present study, the main interest is in the behavior of the streamwise vortices introduced in turbulent boundary layers. The flow behind a vortex generator is modeled by the information that is avilable from studies on the dalta winglet. An algorithm of the solution of the incompressible Navier-Stokes equations for three-dimensional turbulent flows, together with a two layer turbulent model to resolve the near-wall flow, is based on the method of artificial compressibility. The present results show boundary layer distortion due to vortices, such as strong spanwise flow divergence and boundary thinning, and have a good agreement with the experimental data.

Keywords

References

  1. AIAA Journal v.31 no.2 Structure and Development of Streamwise Vortex Arrays Embedded in a Turbulent Boundary Layer Wendt, B.J.;Hingst, W.R.
  2. The Fluid Dynamics and Heat Transfer Effect of Streamwise Vortices Embedded in a Turbulent Boundary Layer Pauley, W.R.;Eaton, J.K.
  3. Journal of Fluid Mechanics v.155 Longitudinal Vortices Imbedded in Turbulent Boundary Layers. Part 1. Single vortex Shabaka, I.M.M.A.;Mehta, R.S.
  4. Journal of Fluid Mechanics v.326 Interaction Between a Spatially Growing Turbulent Boundary Layer and Embedded Streamwise Vortices Liu, J.;Piomeli, U.;Philippe, R.S.
  5. Journal of Computers Fluid v.23 no.5 Influence of Streamwise Curvature on Longitudinal Vortices Imbedded in Turbulent Boundary Layers Kim, W.J., Patal, V.C.
  6. Computational Fluid Dynamics v.4 no.4 Numerical Simulation of 3-D Turbulent Flow with Imbedded Longitudinal Vortex Kim, J.Q.;Ryou, H.S.;Jeong, J.Y.;Dedousis, V.
  7. AIAA Journal v.24 no.3 A Three-Dimensional Incompressible Navier Stokes Flow Solver Using Primitive Variables Kwak, D.C.;Shanks, S.P.;Chakravarthy, S.
  8. Practical Near Wall Turbulence Model for Complex Flow including Separation Chen, H.C.;Patel, V.C.
  9. Visualization measurements of vortex flows Lowson, M.V.
  10. Proceeding 4th Symposium on Turbulent Shear Flows Experimental investigation of the Turbulence Structure of Vortex Wakes Leutcher, O.;Solignac, J.L.
  11. Journal of Fluid Mechanics v.147 Reynolds Stress Measurements in a Turbulent Trailing Vortex Phillips, W.R.C.;Graham, J.A.H.
  12. Journal of Basic Engineering On The Three-Dimensional Turbulent Boundary Layer Generated by Secondary Flow Johnston, J.P.
  13. 전산유체역학 강의노트 1, 2 박원규