DRAG REDUCTION BY EJECTING ADDITIVE SOLUTIONS INTO A PURE-WATER BOUNDARY LAYER

Abstract

Drag reduction caused by ejecting additive solutions from a slot into a pure-water boundary layer on a flat plate was systematically studied. Results include drag measurements for a plane boundary, smooth and rough, with various openings of the slot and with various concentrations and discharges of the ejected additive solution. Conclusions were drawn on the additive requirement in external flows and on the ejection technique for an optimum drag reduction.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1970
Accession Number
AD0709083

Entities

People

  • Jin Wu
  • Marshall P. Tulin

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Boundary Layer
  • Boundary Layer Flow
  • Drag
  • Drag Reduction
  • Flow
  • Fluid Dynamics
  • Fluid Flow
  • Fluids
  • Friction
  • Layers
  • Leading Edges
  • Measurement
  • Mixing
  • Reynolds Number
  • Turbulent Diffusion
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Space Exploration and Orbital Mechanics.