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Three-Dimensional Receptivity of Boundary Layers to External Perturbations

  • Yury S. Kachanov
Conference paper
Part of the IUTAM Symposia book series (IUTAM)

Abstract

The receptivity of the boundary-layer flows to external perturbations represents a very important aspect of the laminar-turbulent transition problem and has both basic and practical significance. In the present paper a very brief review of studies (mainly the experimental ones) performed during past several years is carried out. The generation of two kinds of the instability modes is discussed: (a) the Tollmien-Schlichting (TS) waves and (b) the cross-flow (CF) waves and vortices. We concentrate here on the following three-dimensional receptivity mechanisms: (i) receptivity to localized surface roughness, (ii) receptivity to localized surface vibrations, (iii) acoustic receptivity in presence of a localized surface roughness, and (iv) acoustic receptivity in presence of a localized surface vibrations.

Keywords

Boundary Layer Roughness Element Instability Wave Receptivity Coefficient Surface Perturbation 
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.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Yury S. Kachanov
    • 1
  1. 1.Institute of Theoretical and Applied MechanicsNovosibirskRussia

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