Stability of Shear Layers over Rough Surfaces

Abstract

Presence of surface imperfections may have significant impact on the stability of the adjacent shear layer and on the laminar-turbulent transition process in this layer. The main objective of the present study is the quantitative assessment of such effects in the case of distributed surface roughness. The analysis is focused on the linear stability theory and considers asymptotic as well as transient growth of flow perturbations. The explicit calculations are carried out in the context of channel flow.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2004
Accession Number
ADA442776

Entities

People

  • J. M. Floryan

Organizations

  • Western University

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Boundary Layer Transition
  • Channel Flow
  • Coefficients
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Flow
  • Fluid Dynamics
  • Geometry
  • Layers
  • Reynolds Number
  • Surface Roughness
  • Turbulent Flow
  • Turbulent Mixing
  • Two Dimensional

Readers

  • Computational Modeling and Simulation
  • Fluid Dynamics.