PIPE FLOWS OF DILUTE AQUEOUS POLYMER SOLUTION-3. VISCOUS SUBLAYER AND ADJACENT WALL REGION

The analysis shows; 1) the velocity profile in the wall layer is determined by applying energy equilibrium hypothesis to an attached eddy; 2) the Toms effect is explained by a pair structure of attached eddies and an elongational viscosity of polymer solution: 3) the thickness of viscous sublayer of polymer solution is determined by concentration, intrinsic viscosity, number of monomer units, relaxation time and friction velocity; and 4) the pipe friction coefficient in the saturated region of the phenomenon is predicted without experiments.

• Corporate Authors:

  Japan Society of Mechanical Engineers

  Shinanomachi Rengakan Building, 5th Floor, Shinanomachi 35, Shinjuku-ku
  Tokyo,   Japan  160-0016
• Authors:
  • Tomita, Y
• Publication Date: 1972-11

Media Info

• Features: References;
• Pagination: 10 p.
• Serial:
  • JSME Bulletin
  • Volume: 15
  • Issue Number: 89
  • Publisher: Japan Society of Mechanical Engineers

Subject/Index Terms

• TRT Terms: Additives; Drag; Flow; Pipe flow; Polymers; Turbulence; Velocity
• Candidate Terms: Turbulent flow
• Old TRIS Terms: Drag reduction; Polymer additives; Velocity profiles
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00047645
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Oct 31 1973 12:00AM