Some Ideas on the Control of Near-Wall Eddies

Abstract

The near-wall region of bounded turbulent flows consists of stream- wise vortices, low speed streaks, intense shear layers, inflectional velocity profiles, oscillations and ejections of low speed fluid out into the logarithmic layer. Although a mass of data has accumulated over the past 25 years concerning this important chain of events, the general picture is still suggestive rather than conclusive. Some proposals are offered as means of interacting with and/or interrupting the sequence of these events in the wall region.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1989
Accession Number
ADA207819

Entities

People

  • Ron F. Blackwelder

Organizations

  • University of Southern California

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Boundary Layer
  • Boundary Layer Flow
  • Channel Flow
  • Drag Reduction
  • Flow Fields
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Geometry
  • Pipe Flow
  • Pressure Gradients
  • Reynolds Number
  • Shear Flow
  • Shear Stresses
  • Three Dimensional
  • Turbulent Flow
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Artificial Intelligence
  • Fluid Mechanics and Fluid Dynamics.
  • Regression Analysis.