INFLUENCE OF HELICAL FLOW ON THE HYDRAULIC TRANSPORT CAPACITY OF SOLIDS THROUGH PIPES

A helical flow in dredge pipes shows a series of advantages such as augumentation and uniformity of the concentration of granular solid particles in the flow area, as well as reduction of the liquid/solid mixture velocity and of pipe wear. Starting from a calculation model an analytical approach is made to the effect of secondary flow on the increase of the transport capacity of solids through pipes. Our experiments on two liquid/solid mixtures in spiral flow through pipes of 100 mm diameter provide data with regard to the specific hydraulic parameters. A new practical solution for developing helical flow in dredge pipes is reported.

• Supplemental Notes:
  • Paper C-2 from BHRA Fluid Engineering Symposium, University of Kent, Canterbury, England.
• Corporate Authors:

  British Hydromechanics Research Association

  Cranfield MK43 0AJ, Bedfordshire,   England 
• Authors:
  • Zarea, S
  • Roco, M
• Publication Date: 1975-9

Subject/Index Terms

• TRT Terms: Dredging; Pipe flow; Pipelines
• Old TRIS Terms: Pipeline flow theory
• Subject Areas: Marine Transportation; Pipelines; Terminals and Facilities;

Filing Info

• Accession Number: 00128421
• Record Type: Publication
• Source Agency: British Hydrodynamics Research Association
• Files: TRIS
• Created Date: Jan 14 1976 12:00AM