Experimental and theoretical studies of early turbulence in pipe flows of drag-reducing polymer solutions are described in this work. The experiments show that a critical onset wall shear stress, which increases with solvent viscosity, is associated with the phenomenon. The relationship of the onset condition to polymer concentration is a strong function of viscosity over the range of variables considered. A theoretical, hydrodynamic stability analysis of the laminar pipe flow of a convected Maxwell fluid is presented. The results suggest that early turbulence is a hydrodynamic instability phenomenon.

  • Supplemental Notes:
    • Presented at the Pac Chem Eng Congr, 1st, Kyoto, Japan, Oct. 10-14, 1972, which was sponsored by the Japanese Society of Chemical Engineers and the American Institute of Chemical Engineers.
  • Corporate Authors:

    American Institute of Chemical Engineers

    345 East 47th Street
    New York, NY  United States  10017
  • Authors:
    • Hansen, R J
    • Little, R C
    • Forame, P C
  • Publication Date: 1972-10

Media Info

  • Features: References;
  • Pagination: p. 306-310

Subject/Index Terms

Filing Info

  • Accession Number: 00050502
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: Paper 11-5
  • Files: TRIS
  • Created Date: Jan 24 1974 12:00AM