Natural Transition in an Adverse Pressure Gradient Boundary Layer

  • B. F. A. Van Hest
  • D. M. Passchier
  • R. A. W. M. Henkes
Conference paper
Part of the Fluid Mechanics and its Applications book series (FMIA, volume 36)

Abstract

The paper is devoted to an experimental study of the natural transition process in boundary layers subjected to an adverse pressure gradient and low free stream turbulence intensity. The study was performed to obtain several goals. The first was to extend the available data-set of transitional boundary layers under adverse pressure gradient with detailed measurements of the streamwise and wall-normal velocity components (mean values and Reynolds stresses), velocity spectra, and measurements of the intermittency across the boundary layer and in the streamwise direction. The velocity spectra were used to verify the applicability of linear stability theory, (especially with respect to the parallel-flow assumption with fast boundary layer growth) and the possible effects of nonlinear interaction (because of the large amplification rates) on transition prediction. The measurements of the intermittency were used to verify available empirical relations, like Klebanoff’s (1956) and Narasimha’s (1957) intermittency distributions, which are often used in models for the flow in the transition region.

Keywords

Boundary Layer Turbulent Boundary Layer Transition Prediction Adverse Pressure Gradient Linear Stability Theory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Corke, T.C. (1987) Measurements of resonant phase locking in unstable axisymetric jets and boundary layers, In Non–linear Wave Interactions in Fluids editors Miksad, R.W., Akylas, T.R., and Herbert, T., editors, Vol. no. 87, pp. 37–65.Google Scholar
  2. Hest, B.F.A. van, Groenen, H.F.,and Passchier, D.M. (1996) Non–linear development and breakdown of Tollmien–Schlichting waves in an adverse pressure gradient boundary layer InTransitional Boundary Layers in Aeronautics, editors Henkes, R.A.W.M. and van Ingen, J.L., K.N.A.W colloquium Amsterdam, the Netherlands.Google Scholar
  3. Hest, B.F.A. van, Passchier, D.M. and Ingen, J.L. van (1995) The development of a Turbulent Spot in an Adverse Pressure Gradient Boundary Layer In IUTAM symposium onLaminar–Turbulent Transition editors Kobayashi, R., editor, pp. 255–262.Google Scholar
  4. Klebanoff, P.S. (1956) Characteristics of Turbulence in a Boundary Layer with Zero Pressure GradientTechnical Report TN 3178, NACAGoogle Scholar
  5. Narasimha, R. (1957) On the distribution of intermittency in the transition region of a boundary layer J.Aero. Sci 24, pp. 711–712Google Scholar
  6. Rist, U. (1996) I.A.G., Universität Stuttgart, Germany (private communication).Google Scholar

Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • B. F. A. Van Hest
    • 1
  • D. M. Passchier
    • 1
  • R. A. W. M. Henkes
    • 1
  1. 1.Delft University of TechnologyDelftThe Netherlands

Personalised recommendations