TURBULENT FLOW OF DRAG-REDUCING SUSPENSIONS

The friction-reducing properties of fiber suspensions were investigated. Fibers of asbestos, glass, and acrylic were found to greatly reduce the turbulent-flow resistance of both aqueous and nonaqueous suspending fluids. Pipe-flow and rotating-disk experiments show that fibers having the smallest diameter, and substantial length-to-diameter ratio gave the most friction reduction at the smallest weight concentration of fiber. An asbestos fiber gave 65 percent friction reduction in a small pipe-flow apparatus and 48 percent in the rotating-disk equipment (both being the maximum obtainable in the devices) at a suspension concentration of 500 ppm.

• Corporate Authors:

  Naval Undersea Center

  San Diego, CA  United States 
• Authors:
  • Hoyt, J W
• Publication Date: 1972-7

Media Info

• Pagination: 29 p.

Subject/Index Terms

• TRT Terms: Drag; Flow; Friction; Pipe flow; Turbulence
• Candidate Terms: Turbulent flow
• Old TRIS Terms: Drag reduction; Friction reduction
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00040916
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NUC-TP-299
• Files: TRIS
• Created Date: Feb 14 1973 12:00AM