THE EFFECT OF ADDITIVES ON FLUID FRICTION

The turbulent frictional resistance of dilute polymer solutions can be as low as one-quarter that of the pure solvent. The reduction of drag can be associated with polymer properties and the hydrodynamics of the flow. This review illustrates the key concepts in hydrodynamics, polymer chemistry and rheology which apply to polymer drag reduction. The effect of parts-per-million polymer concentrations on laminar-turbulent transition, boundary-layer properties and turbulent frictional resistance in pipe flow and along flat plates is emphasized, using experimental data from current literature. Industrial, fire-fighting, marine, and biological applications are discussed.(Author)

• Supplemental Notes:
  • Presented at the Winter Annual Meeting, Washington, D.C., 28 November-2 December, 1971. Also available in Transactions of the ASME, Journal of Basic Engineering, pp 258-285, June 1972.
• Corporate Authors:

  Naval Undersea Research and Development Center

  San Diego, CA  United States 
• Authors:
  • Hoyt, J W
• Publication Date: 1972-1-10

Media Info

• Pagination: 28 p.

Subject/Index Terms

• TRT Terms: Additives; Boundary layer flow; Drag; Pipe flow; Polymers; Skin resistance
• Old TRIS Terms: Drag reduction; Polymer additives
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00041487
• Record Type: Publication
• Source Agency: National Technical Information Service
• Files: TRIS
• Created Date: Mar 2 1973 12:00AM