Diffusion of Drag Reducing Polymers in a Turbulent Boundary Layer.

Abstract

The diffusion of diluted drag reducing polymers and the effect of the diffusing polymers on the development of the boundary layer are analyzed. The analysis suggests that the diffusion rate is reduced together with the drag. However, in most practical situations the reduction in the diffusion rate is small. Polymers ejected near the wall will diffuse over the entire turbulent boundary layer within a distance of the order of 1000 boundary layer thicknesses. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1971
Accession Number
AD0727632

Entities

People

  • Kuang-shen Hsu
  • Michael Poreh

Organizations

  • University of Iowa

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Diffusion
  • Layers
  • Turbulent Boundary Layer

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Polymer Science and Technology
  • Thin Film Deposition Science.