DEVELOPMENT OF A FLUID CONCENTRATED DISPERSION OF A WATER-SOLUBLE POLYMER CAPABLE OF REDUCING THE FRICTION OF WATER UNDER TURBULENT CONDITIONS

Abstract

Dispersions (slurries) of up to 45 weight percent water-soluble polymers in nonsolvent carriers were effective for reducing drag in turbulent flowing water streams. Separan or Polyox, in polypropylene glycol, gave about 20 percent friction reduction in mixing times less than 0.3 seconds, and reductions of over 60 percent in 1.5 seconds, in a 0.26-inch i.d. tube. In a 10-inch pipe, friction reductions of 30 percent were obtained. Decreasing the water temperature from 40F to 30F, and adding 3.5 percent salt to the water had only minor effects on friction reduction. The optimum concentration of polymer in water stream was approximately 80 ppm. Dispersions of polymer have been held 18 months without settling or dissolving.

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Document Details

Document Type
Technical Report
Publication Date
Feb 26, 1968
Accession Number
AD0837400

Entities

People

  • Lee T. Rozelle
  • Ralph H. Forester
  • Roy E. Larson

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Diameters
  • Dispersions
  • Drag
  • Flow
  • Friction
  • Materials
  • Measurement
  • Model Basins
  • Particle Size
  • Particles
  • Physical Properties
  • Polymers
  • Research Facilities
  • Reynolds Number
  • Salinity
  • Test Facilities
  • Turbulent Flow

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Mathematics or Statistics
  • Polymer Science and Technology