Skin Friction Measurements in Flows Over Tethered Polymer Coatings

Abstract

The effect of a tethered polymer coating on the turbulence production in a turbulent boundary layer was examined. An experimental investigation was carried out in the Naval Ocean Systems Center (NOSC) water tunnel. The aims of the study were to determine the existence of an interaction between the tethered polymer coating and turbulence production at the wall and in the outer layer. Skin friction was measured in a flat plate turbulent boundary layer with and without tethered polymer coating. There were no measurable effects on the turbulent boundary layer skin friction. We should point out the purpose of the tethered polymer coatings is the prevention of biofouling on ships. With this fact in mind it is encouraging that the coating has no deleterious effect on the boundary layer.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1991
Accession Number
ADA241285

Entities

People

  • D. M. Ladd
  • E. W. Hendricks

Tags

Communities of Interest

  • Biomedical
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Drag
  • Fluid Dynamics
  • Fluid Mechanics
  • Friction
  • Layers
  • Leading Edges
  • Measurement
  • Mechanics
  • Production
  • Skin Friction
  • Tunnels
  • Turbulence
  • Turbulent Boundary Layer
  • Turbulent Mixing
  • Water Tunnels

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Polymer Science and Technology
  • Surface Coatings Technology.