DISCHARGE OVER POLYGONAL WEIRS

Intake towers and weirs in reservoirs with samll water depth and for small floods can be designed with polygon in plan in several cases. The polygon is easier to construct compared to the circle in plan, but the hydraulic computation is more complicated. The article shows the influence of an individual corner of the polygonal weir on the discharge coefficient and therefore on the discharge capacity. The independent variable hydraulic and geometric parameters, e.g., corner angle, weir height, and overall head influence the flow at the weir and over the weir crest in different ways. All the results of this basic investigation show that a simple mathematical relation between disturbing effect of the corner and the overall head can be assumed. A simplified two-dimensional flow theory is developed to make the hydraulic computation of the discharge capacity of polygonal weirs possible.

• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Indelkofer, H
  • Rouve, G
• Publication Date: 1975-3

Media Info

• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: p. 385-401
• Serial:
  • Journal of the Hydraulics Division
  • Volume: 101
  • Issue Number: HY3
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Fluid dynamics; Hydraulic structures; Overflows; Reservoirs; Weirs
• Uncontrolled Terms: Polygons
• Old TRIS Terms: Discharge coefficients; Intake structures
• Subject Areas: Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00096113
• Record Type: Publication
• Report/Paper Numbers: ASCE 11178 Proc Paper
• Files: TRIS
• Created Date: Jul 2 1975 12:00AM