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.
Naval Undersea CenterSan Diego, CA United States
- Hoyt, J W
- Publication Date: 1972-7
- Pagination: 29 p.
- TRT Terms: Drag; Flow; Friction; Pipe flow; Turbulence
- Candidate Terms: Turbulent flow
- Old TRIS Terms: Drag reduction; Friction reduction
- Subject Areas: Design; Marine Transportation;
- 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