EFFECT OF HELIX ANGLE ON FLOW IN CORRUGATED PIPES

NEW MEASUREMENTS OF THE DARCY FRICTION IN HELICAL CORRUGATED PIPES ARE COMBINED WITH EARLIER MEASUREMENTS TO SHOW GENERAL TRENDS. THESE INDICATE THAT FOR A GIVEN PIPE DIAMETER, FRICTION FACTOR DECREASES AS HELIX ANGLE DECREASES AND THAT FOR A GIVEN HELIX ANGLE, FRICTION FACTOR DECREASES AS PIPE DIAMETER INCREASES. SOME ANALYSES OF VELOCITY PROFILE MEASUREMENTS ARE ALSO PRESENTED. THE IDEA IS ADVANCED THAT THE DECREASE IN FRICTION FACTOR IS ASSOCIATED WITH REDUCED TURBULENCE BECAUSE OF THE ROTATING FLOW COMPONENT. /ASCE/

• Supplemental Notes:
  • Vol 96, No HY11, PROC PAPER 7685, PP 2253-2263, 3 FIG 7
• Authors:
  • Silberman, E
• Publication Date: 1970-11

Media Info

• Serial:
  • Journal of the Hydraulics Division
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Angularity; Corrugated pipe culverts; Flow; Friction factor; Measurement; Velocity
• Uncontrolled Terms: Angles
• Old TRIS Terms: Helices
• Subject Areas: Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00204320
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 28 1970 12:00AM