DRAG REDUCTION BY POLYMER THREADS

A novel type of drag reduction is described which is caused by long polymer threads in turbulent flow. These threads are formed by axial injection of a concentrated, visco-elastic, polymer solution and persist over a distance of more than 200 tube diameters. The observed drag reduction is particularly effective at low Reynolds numbers. Depending on the properties of the injection system, the continuous supply of the polymer solution may change spontaneously into an oscillating supply resulting in peroidic pressure drop variations.

• Corporate Authors:

  Pergamon Press, Incorporated

  Maxwell House, Fairview Park
  Elmsford, NY  United States  10523
• Authors:
  • Vleggaar, J
  • Tels, M
• Publication Date: 1973-3

Media Info

• Features: References;
• Pagination: p. 965-968
• Serial:
  • Chemical Engineering Science
  • Volume: 28
  • Issue Number: 3
  • Publisher: Pergamon Press, Incorporated

Subject/Index Terms

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

Filing Info

• Accession Number: 00048444
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Nov 14 1973 12:00AM