TURBULENT FLOW OF NON-NEWTONIAN FLUIDS

The phenomenon of drag reduction in turbulent flow of solutions of fluids with long-chain molecules (polymers) is studied from the point of view that the effect is due solely to the non-newtonian variation of fluid shearing stress with strain, that is, variation of viscosity with strain. That the viscosity of the solvent is the essential physical property that controls the phenomenon is obtained from the direct effect of temperature. It is also shown that the commencement of turbulent friction reduction is essentially independent of the length of class of polymer, as well as concentration. (Author)

• Corporate Authors:

  Virginia Polytechnic Institute and State University, Blacksburg

  Department of Agronomy
  Blacksburg, VA  United States  24061
• Authors:
  • Van Driest, E R
• Publication Date: 1971-5

Media Info

• Pagination: 33 p.

Subject/Index Terms

• TRT Terms: Additives; Boundary layer; Drag; Nonnewtonian flow; Polymers; Turbulence; Turbulent boundary layer
• Old TRIS Terms: Drag reduction; Polymer additives
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00025590
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: AFOSR-TR-71-2285
• Contract Numbers: AF-AFOSR-2039-71
• Files: TRIS
• Created Date: Feb 4 1972 12:00AM