FORCES ON EDGE-HINGED PANELS IN GRADUALLY VARIED FLOW

This paper describes a mathematical model leading to experimental analysis to estimate the hydraulic forces on a prototype edge-hinged panel (wicket gate) in gradually varied flow. The two-dimensional potential theory of hydrodynamics is used to model the effect of the mean water flow approaching a gate aperture controlled by a hydraulic wicket in a locks-and-dam system. The mean pressure against a typical wicket partially blocking the aperture is then modeled using conformal mapping. The elastic reaction at the supporting shaft of the gate is derived from equilibrium considerations. The effect of the fluctuations of the pressure field about the mean is obtained through an application of the theory of stationary random processes. The total design reaction at the shaft of the wicket is cast in a first-order second-moment format. The theoretical model is compared with experiments on a 1/25-scale physical model. The application of the model in hydraulic design of wicket gates is illustrated by means of a practical example.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/8672558
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • de Bejar, L A
  • Hall, R L
• Publication Date: 1998-8

Language

• English

Media Info

• Features: Appendices; Figures; Photos; References;
• Pagination: p. 813-821
• Serial:
  • Journal of Hydraulic Engineering
  • Volume: 124
  • Issue Number: 8
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9429
  • Serial URL: https://ascelibrary.org/journal/jhend8

Subject/Index Terms

• TRT Terms: Dams; Equilibrium (Mechanics); Flow; Gates; Hydraulics; Hydrodynamics; Locks (Waterways); Mathematical models; Openings; Prototypes; Scale models; Streamflow; Structural design; Water; Water pressure
• Uncontrolled Terms: Apertures; Conformal mapping; Hydraulic design; Two dimensional
• Old TRIS Terms: Edge hinged panels; Wicket gates
• Subject Areas: Bridges and other structures; Hydraulics and Hydrology; Marine Transportation; Materials;

Filing Info

• Accession Number: 00753310
• Record Type: Publication
• Contract Numbers: DTFH61-93-C-00068
• Files: TRIS
• Created Date: Sep 27 1998 12:00AM