Injection of Drag Reducing Additives into Turbulent Water Flows.

Abstract

The primary objective of this portion of the program is to build a data base that is sufficient to critically test models of the initial mixing between a polymer solution injected at the wall and a turbulent water flow. Time-resolved concentration measurements were made using a laser-induced fluorescence technique downstream of a flush mounted wall injector. The injected polymer solution was a 700 ppm aqueous solution of SEPARAN AP-273 AP-273. For comparison purposes, measurements were also made for a water injection at the same flow rate. The results for the instantaneous, mean and root-mean-square concentration profiles at positions 10, 25, 50 and 100 mm downstream of the injector show how the mixing decreases when the injectant is a polymer solution.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1988
Accession Number
ADA192072

Entities

People

  • David T. Walker
  • William G. Tiederman

Organizations

  • Purdue University

Tags

Communities of Interest

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

DTIC Thesaurus Topics

  • Acquisition
  • Boundary Layer
  • Channel Flow
  • Chemical Engineering
  • Data Acquisition
  • Databases
  • Diffusion
  • Drag Reduction
  • Engineering
  • Laser Beams
  • Lasers
  • Measurement
  • Mechanical Engineering
  • Military Research
  • Turbulent Boundary Layer
  • Turbulent Mixing
  • Water Flow

Fields of Study

  • Physics

Readers

  • Environmental Engineering
  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • Directed Energy