EFFECT OF LEE-WAKE ON SCOUR BELOW PIPELINES IN CURRENT

A study is reported which investigated the effect of lee-wake on scour below pipelines exposed to currents. The experimental set-up is described, and the experimental results are presented and analyzed. Comparisons are made with predictions from discrete vortex model. It was found that vortex shedding is present in the lee-wake of a pipeline from rather early stages of scour process, leading to an organized wake flow. The scour downstream of the pipeline is apparently governed by this organized flow. Other observations are made regarding the discrete vortex model Cloud-in-Cell (CIC), and the time average bed shear stress.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0733950X
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Sumer, B M
  • Jensen, H R
  • Mao, Y
  • Fredsoe, J
• Publication Date: 1988-9

Media Info

• Features: Appendices; Figures; References;
• Pagination: p. 599-614
• Serial:
  • Journal of Waterway, Port, Coastal and Ocean Engineering
  • Volume: 114
  • Issue Number: 5
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-950X
  • EISSN: 1943-5460
  • Serial URL: http://ascelibrary.org/journal/jwped5

Subject/Index Terms

• TRT Terms: Computer programs; Forecasting; Pipelines; Scour; Vortices
• Subject Areas: Design; Highways; Marine Transportation; Pipelines; Planning and Forecasting; Terminals and Facilities; I21: Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00476192
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 30 1988 12:00AM