FRICTION-FACTORS FOR FLAT-BED FLOWS IN SAND CHANNELS

A METHOD IS DEVELOPED FOR DETERMINING FRICTION FACTORS OF OPEN CHANNEL FLOWS OVER FLAT SAND BEDS IN AN ACTIVE STATE OF TRANSPORT. THE GRAPHICAL PREDICTOR IS DERIVED FROM BOTH FIELD AND LABORATORY DATA, AND IS PRESENTED IN A FORMAT SIMILAR TO THAT OF THE MOODY PIPE-FRICTION DIAGRAM. THE VARIATION OF FRICTION FACTOR WITH REYNOLDS NUMBER FOR CONSTANT VALUES OF THE RATIO OF HYDRAULIC RADIUS TO MEDIAN SEDIMENT SIZE WAS FOUND TO BE MUCH DIFFERENT FOR THESE FLOWS THAN FOR ONE-PHASE FLOWS IN RIGID-BOUNDARY CONDUITS. /ASCE/

• Supplemental Notes:
  • Vol 95, No HY 4, PROC PAPER 6678, PP 1227-1234, 2 FIG, 1
• Authors:
  • Lovera, F
  • Kennedy, J F
• Publication Date: 1969-7

Media Info

• Serial:
  • Journal of the Hydraulics Division
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Channel flow; Friction factor; Graphics; Hydraulics; Reynolds number
• Uncontrolled Terms: Graphical analysis; Open channel flow
• Subject Areas: Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00204239
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 29 1994 12:00AM