DRAG REDUCTION AND DEGRADATION OF DILUTE POLYMER SOLUTIONS IN TURBULENT PIPE FLOWS

Drag reduction caused by dilute polyethylene oxide (POLYOX WSR-301) and anionic charged polyacrylimide (MAGNIFLOC 835A) polymer solutions was studied experimentally in 1.918- and 0.455-cm ID smooth pipes. The POLYOX solutions tested are superior in drag reduction but inferior in shear-degradation resistance compared to the MAGNIFLOC solutions at corresponding concentrations. A three-layer mean velocity profile model appears to be more consistent with current and other data than a traditional two-layer model. The onset of measured drag reduction depends upon solution concentration and is seriously affected by shear degradation. (Author)

• Corporate Authors:

  Naval Ship Research and Development Center

  Washington, DC  United States 
• Authors:
  • Huang, T T
  • Santelli, N
• Publication Date: 1971-8

Media Info

• Pagination: 41 p.

Subject/Index Terms

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

Filing Info

• Accession Number: 00025591
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NSRDC-3677
• Files: TRIS
• Created Date: Feb 4 1972 12:00AM