EFFECTS OF A DRAG-REDUCING POLYMER ON THE TURBULENT BOUNDARY LAYER

Data are presented showing the time effects caused by polymer solution drag-reduction degradation on the mean velocity and axial fluctuating velocity profiles. Velocity profiles obtained in the study at high drag reduction using a time-study technique demonstrate that the polymer molecules affect not only the near wall region, as shown by the change in viscous sublayer velocity gradient and sublayer thickness, but that the turbulent core is affected as well, as evidenced by the fact that the slope of the turbulent core velocity profile differs substantially from the Newtonain value of 5.75.

• Corporate Authors:

  American Institute of Chemical Engineers

  345 East 47th Street
  New York, NY  United States  10017
• Authors:
  • Kumor, S M
  • Sylvester, N D
• Publication Date: 1973

Media Info

• Features: References;
• Pagination: p. 1-13
• Serial:
  • AICHE Symposium Series
  • Volume: 69
  • Issue Number: 130
  • Publisher: American Institute of Chemical Engineers

Subject/Index Terms

• TRT Terms: Additives; Boundary layer; Drag; Polymers; Turbulence; Turbulent boundary layer; Velocity
• Old TRIS Terms: Drag reduction; Polymer additives; Velocity fluctuations; Velocity profiles
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00050528
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Jan 11 1974 12:00AM