FLOW AND BED PROFILE IN MEANDERING SAND-SILT RIVERS

Mathematical models for defining three-dimensional flow and bed topography in sinuous channels with suspendable bed material are presented. It is shown theoretically that the secondary flow in sinuous channels shows a reduction in its magnitude below that of a uniformly-curved channel, and also displays a phase-lag relative to the channel plan-form. The model for bed topography is derived by considering the sediment balance for bed load and suspended load, the transport rate and direction, all of which are governed by the three-dimensional flow. A laboratory test supports the model. The present study has made it possible to predict the large-scale bed topography by meandering sand-silt rivers, including such features as the magnitude and the location of local scour and point-bar deposits.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/8672558
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • IKEDA, S
  • Nishimura, T
• Publication Date: 1986-7

Media Info

• Features: Appendices; Figures; References;
• Pagination: p. 562-579
• Serial:
  • Journal of Hydraulic Engineering
  • Volume: 112
  • Issue Number: 7
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9429
  • Serial URL: https://ascelibrary.org/journal/jhend8

Subject/Index Terms

• TRT Terms: Flow; Loads; Mathematical models; Meanders; Silty sands; Streambeds; Suspended sediments; Topography
• Uncontrolled Terms: Profiles
• Old TRIS Terms: Bed load; River beds
• Subject Areas: Highways; Hydraulics and Hydrology; I26: Water Run-off - Freeze-thaw;

Filing Info

• Accession Number: 00460019
• Record Type: Publication
• Report/Paper Numbers: ASCE Paper 20716
• Files: TRIS
• Created Date: Nov 30 1986 12:00AM