MOMENTUM AND HEAT TRANSFER IN TURBULENT PIPE FLOW OF SOLUTIONS OF MACROMOLECULES

An equation is established for the thickness of the laminar sublayer in turbulent pipe flow of liquids containing viscoelastic additives. This information is obtained as a consequence of a renewal model by analysis of two limiting behaviours. In the first limiting behavior the contact time with the wall is very short, while in the second it is very long. An equation for the thickening of the laminar sublayer caused by viscoelasticity is obtained by interpolating between the two limiting cases. This equation allows deduction of expressions for the pressure drop and for the heat transfer coefficient.

• Corporate Authors:

  Loughborough University

  Transport Studies Group
  Department of Civil and Building Engineering
  Loughborough, Leicestershire  United Kingdom  LE11 3TU
• Authors:
  • Ruckenstein, E
• Publication Date: 1972-10

Media Info

• Features: References;
• Pagination: p. 180-184
• Serial:
  • Chemical Engineering Journal
  • Volume: 4
  • Issue Number: 2
  • Publisher: Loughborough University

Subject/Index Terms

• TRT Terms: Additives; Flow; Heat transfer; Pipe flow; Polymers; Turbulence
• Candidate Terms: Turbulent flow
• Old TRIS Terms: Polymer additives
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00047647
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Oct 31 1973 12:00AM