ROUGHNESS ELEMENTS AS ENERGY DISSIPATORS OF FREE-SURFACE FLOW IN CIRCULAR PIPES

The report describes experiments on peripheral rings used in smooth, circular pipes, as roughness elements to reduce the velocity of flow. The studies pertain only to culverts flowing under inlet control on steep slopes, that is, pipes functioning as open channels with supercritical flow. Model tests were made to investigate the feasibility of roughness elements as energy dissipators to reduce the kinetic energy of high-velocity, free-surface flows in pipes.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1971/373/373-006.pdf
• Supplemental Notes:
  • Sponsored by Committee on Surface Drainage of Highways. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Wiggert, James M
  • Erfle, Paul D
  • Morris, Henry M
• Publication Date: 1971

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 64-73
• Monograph Title: Design of culverts, energy dissipators and filter systems
• Serial:
  • Highway Research Record
  • Issue Number: 373
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Bridges; Corrugated steel; Culverts; Steel pipe
• Old TRIS Terms: Corrugated steel pipes
• Subject Areas: Bridges and other structures; Railroads;

Filing Info

• Accession Number: 00044508
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Jun 15 1973 12:00AM