IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 33rd Congress - Vancouver (2009) : Topic C: Water Engineering for the Protection and Enhancement of Natural Watershed/Aquifer Environme... : Evaluation of a lock culvert valve using a computational flow model
Evaluation of a lock culvert valve using a computational flow model
Author : E. Allen Hammack and Richard L. Stockstill
The flow through navigation lock filling and emptying systems is controlled by culvert valves. For high-lift locks, U.S. Army Corps of Engineers’ guidance (Headquarters, U.S. Army Corps of Engineers, 1975) recommends that these valves be of the reverse tainter design. Evaluation of the valve’s performance requires an understanding of the complex flow interaction with the partially-opened valve. Such detailed modeling of lock culvert valves has historically been reserved to physical models. However, computational flow modeling provides an economic alternative for the evaluation of lock components. This paper investigates the hydraulic performance of the reverse tainter valves in the culverts at John Day Lock, Columbia River. Performance is evaluated in terms of hydraulic parameters obtained from three-dimensional (3D) simulations of the culvert flows for several valve openings seen during a lock operation. The flow variables, pressure and velocity, are used to determine empirical coefficients that used to evaluate the hydraulic design of lock valves. Performance is described with general parameters such as pressure coefficients and contraction and discharge coefficients.
File Size : 254,730 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 33rd Congress - Vancouver (2009)
Article : Topic C: Water Engineering for the Protection and Enhancement of Natural Watershed/Aquifer Environments
Date Published : 09/08/2009
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