JET SCOUR AROUND VERTICAL PILE

The mechanism and characteristic parameters affecting local scour around a vertical pile caused by turbulent circular wall jets are examined in this study. Two basic scouring mechanisms are investigated: the pile obstruction and the jet diffusion mechanisms. The former is dominated by a horseshoe vortex system while the latter is controlled by the bed shear stress as the jet diffuses into the flow. Investigators identify four types of equilibrium scour hole profiles. The criteria for each type of profile are categorized by the densimetric Froude number and the relative impingement distance. The boundary limits for the different profiles are delineated by newly developed semiempirical equations. Results of the study are reported in detail.

• 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:
  • Chin, C O
  • Chiew, Y M
  • Lim, S Y
  • Lim, F H
• Publication Date: 1996-3

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 59-67
• Serial:
  • Journal of Waterway, Port, Coastal and Ocean Engineering
  • Volume: 122
  • Issue Number: 2
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-950X
  • EISSN: 1943-5460
  • Serial URL: http://ascelibrary.org/journal/jwped5

Subject/Index Terms

• TRT Terms: Boundary value problems; Depth; Erosion; Machines; Mechanical equilibrium; Navigational obstructions; Optical diffusion; Ports; Scour; Shear stress; Support piles; Vortices
• Uncontrolled Terms: Boundary conditions; Parameters; Profiles
• Old TRIS Terms: Mechanisms; Obstruction; Vertical piles; Vortex theory
• Subject Areas: Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00719338
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 25 1996 12:00AM