INFLUENCE OF ADDED FINE PARTICLES ON THE FLOW STRUCTURE AND THE PRESSURE LOSSES IN SAND-WATER-MIXTURE

It is known from dredging practice that under certain conditions an addition of fine material (like silt or clay) to the sand-water-mixture may cause a reduction of the pressure losses in the pipe line. In order to obtain more detailed information experiments were carried out in a horizontal pipe with an inside diameter of 100 mm. Three types of sand were used and an active sodium bentonite was added, equal to 6.7% of the sand volume. A decrease of the pressure drop was observed, especially for finer material, higher concentrations, and lower to medium velocities. Above a certain velocity an increase of the pressure loss by the addition of bentonite was noted.

• Supplemental Notes:
  • Presented at HYDROTRANSPORT 3--Third International Conference on the Hydraulic Transport of Solids in Pipes, Colorado School of Mines, Golden, Colo., May 15-17, 1974. Sponsored by BHRA Fluid Engineering. Complete set of Conference papers available for $45.00.
• Corporate Authors:

  Colorado School of Mines

  1500 Illinois Street
  Golden, CO  United States  80401
• Authors:
  • Kazanskij, I
  • Bruhl, H
  • Hinsch, J
• Publication Date: 1974-5

Media Info

• Pagination: 10 p.

Subject/Index Terms

• TRT Terms: Drag; Flow; Pipe flow; Turbulence; Two phase flow
• Candidate Terms: Turbulent flow
• Old TRIS Terms: Drag reduction; Pipeline flow theory
• Subject Areas: Design; Freight Transportation; Marine Transportation;

Filing Info

• Accession Number: 00056461
• Record Type: Publication
• Source Agency: British Hydrodynamics Research Association
• Report/Paper Numbers: Paper D2
• Files: TRIS
• Created Date: Jul 15 1974 12:00AM