SETTLING OF SPHERES IN DRAG-REDUCING POLYMER SOLUTIONS

The fall velocities of 0.125-0.5 in. dia spheres falling through water or solutions of drag-reducing additives (measured at 20 or 40 C in 6 ft long, 20.32, 13.36, 6.35, or 3.18 cm dia cylinders with precautions to prevent shear degradation) showed that drag reduction occurs at Re less than 100,000, which is contrary to the results of Sanders (Int. Shipbuilding Progr. 14:140-57 (1967)). Thus the Reynolds number alone is not an adequate criterion for drag reduction, even for well-defined sphere hydrodynamics.

  • Corporate Authors:

    American Chemical Society

    1155 16th Street, NW
    Washington, DC  USA  20036
  • Authors:
    • Carey, W W
    • Turain, R M
  • Publication Date: 1970-2

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00056100
  • Record Type: Publication
  • Source Agency: American Petroleum Institute
  • Files: TRIS
  • Created Date: Jul 15 1974 12:00AM