ON THE EXPLANATION AND CORRELATION OF TURBULENT DRAG REDUCTION IN DILUTE MACROMOLECULAR SOLUTIONS

A simple mechanistic picture of turbulent drag reduction is proposed, based on the recent work of Corino and Brodkey for Newtonian fluids. Possible explanations are then considered from a phenomenological viewpoint, and the applicability of the well-known dumbbell model toward this end is discussed. It is seen that the predictions of the "molecular" dumbbell model are surprisingly similar to those of the "continuum" convected Maxwell model utilized by Seyer and Metzner. The significance of the fluid relaxation time in characterizing the drag-reducing effectiveness of polymer solution is shown to follow from a number of qualitative arguments.

• Corporate Authors:

  Interscience Publishers

  605 Third Avenue
  New York, NY  United States  10016
• Authors:
  • Gordon, R J
• Publication Date: 1970-8

Media Info

• Features: References;
• Pagination: 9 p.
• Serial:
  • Applied Polymer Science, Journal of
  • Volume: 14
  • Issue Number: 8
  • Publisher: Interscience Publishers

Subject/Index Terms

• TRT Terms: Additives; Drag; Flow; Nonnewtonian flow; Polymers; Turbulence
• Candidate Terms: Turbulent flow
• Old TRIS Terms: Drag reduction; Polymer additives
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00032166
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Apr 21 1972 12:00AM