THE FLOW OF SETTLING SLURRIES IN TUBES WITH INTERNAL SPIRAL RIBS

Studies of the flow of sand/water test slurries through Lucite tubes with ribs of 5.15:1, 3.32:1, and 1.80:1 pitch-diameter (P/D) ratios showed that pressure gradients at high average mixture velocities were increased by the presence of an internal spiral rib to an extent which increases with decreasing P/D ratio. At relatively low average mixture velocities, the converse was true, and the ribs were advantageous. Calculations of the power required to transport a unit mass of solid thus indicated that pipelines with internal spiral ribs could be a more efficient conduit for long distance transport of solids in the form of settling slurries. The addition of air as a third phase to one of the slurries increased the pressure gradients and was, therefore, not useful in counter-acting settling tendencies.

• Supplemental Notes:
  • Presented at the Fluid Dynamics Symposium, Hamilton, Ontario, Canada, Aug. 1970.
• Corporate Authors:

  Canadian Society for Chemical Engineers

  151 Slater Street
  Ottawa 4, ONo,   Canada 
• Authors:
  • Charles, M E
  • Cheh, CHS
  • Chu, LHL
• Publication Date: 1971-12

Media Info

• Pagination: p. 737-741
• Serial:
  • Canadian Journal of Chemical Engineering
  • Volume: 49
  • Issue Number: 6
  • Publisher: Canadian Society for Chemical Engineers

Subject/Index Terms

• TRT Terms: Pipe flow; Slurry
• Old TRIS Terms: Pipeline flow theory; Slurries
• Subject Areas: Freight Transportation; Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00056190
• Record Type: Publication
• Source Agency: American Petroleum Institute
• Files: TRIS
• Created Date: Jul 15 1974 12:00AM