EFFECTS OF MEANDERING IN ALLUVIAL STREAMS

It was found that for a given mean depth and velocity of flow, the sediment discharge per unit width in the full-width meandering channel was greater that in the straight flume, whihc in turn was greater than that of the half-width meandering channel. The bend-loss coefficient, defined as the head loss (plus or minus) due just to channel curvature normalized by the mean-velocity head, increases with Froude number, the ratio of bed hydraulic radius to median sand diameter, and the ratio of width to center line radius of curvature. At the smaller depths investigated, the friction factors of the sinuous channel flows are less than those of the straight channel flows. These effects apparently result primarily from the large changes produced in the bed configurations by the secondary flows.

• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Onishi, Y
  • Jain, S C
  • Kennedy, J F
• Publication Date: 1976-7

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 899-918
• Serial:
  • Journal of the Hydraulics Division
  • Volume: 102
  • Issue Number: HY7
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Alluvium; Curvature; Depth; Flow; Meanders; Pavement subgrade; Sediments; Stream channels; Streams; Velocity
• Uncontrolled Terms: Stream channels
• Old TRIS Terms: Beds; Discharge
• Subject Areas: Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00139583
• Record Type: Publication
• Report/Paper Numbers: ASCE #12248
• Files: TRIS
• Created Date: Oct 6 1976 12:00AM