3-DIMENSIONAL MEASURED AND SIMULATED FLOW FOR SCOUR NEAR SPUR DIKES

To improve understanding of the flow and scour processes associated with spur dikes more fully, 3-dimensional flow velocities were measured using an acoustic Doppler velocimeter at a closely spaced grid over a fixed flat bed with a submerged spur dike. Some 2592 3-dimensional velocities around a trapezoidal shaped submerged spur dike were measured. General velocity distribution and detailed near field flow structures were revealed by the measurement. Some important differences between the flow fields measured in this study and those measured for non-submerged vertical obstructions were observed in this study. Numerical simulation was performed using the free surface turbulent flow model, CCHE3D. The numerical simulation of the flow showed very good agreement between the computation results and the measurements. The numerical simulation results indicate the CCHE3D model can be used to predict near-field flows around hydraulic structures.

• Supplemental Notes:
  • The proceedings are available on CD-ROM.
• Corporate Authors:

  Texas Transportation Institute

  Texas A&M University System, 1600 E Lamar Boulevard
  Arlington, TX  United States  76011
• Authors:
  • Kuhnle, R
  • Jia, Y
  • Alonso, C
• Conference:
  • First International Conference on Scour of Foundations
  • Location: College Station, Texas
  • Date: 2002-11-17 to 2002-11-20
• Publication Date: 2002

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 349-363

Subject/Index Terms

• TRT Terms: Flow; Hydraulic structures; Mathematical models; Mathematical prediction; Near field; Scour; Simulation; Spur dikes; Three dimensional flow; Turbulence; Velocity measurement
• Uncontrolled Terms: Doppler velocimeter
• Subject Areas: Bridges and other structures; Data and Information Technology; Design; Highways; Hydraulics and Hydrology; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00977024
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 4 2004 12:00AM