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Hydraulic Model Tests of Flow around Penstock Suspended inside the Tunnel for Design of a Small Hydro

by Jey K. Jeyapalan, Hardy BBT, Inc., United States,
Carlos A. Jaramillo, Hardy BBT, Inc., United States,



Document Type: Proceeding Paper

Part of: Waterpower '89

Abstract:

The proposed hydropower project in the State of Virginia involves design and construction of a steel penstock hung from the crown of an existing outlet tunnel at this U.S. Army Corps of Engineer's dam. Few of the concerns raised by the Corps of Engineers are centered around the extent to which the penstock would obstruct the normal operation of the outlet tunnel and the long term stability of the penstock under the hydraulic forces exerted by the water flowing in the tunnel for a range of operating conditions. In order to determine the degree to which the installation of the penstock at the roof of the tunnel would impact the flow conditions in the tunnel, a series of hydraulic model tests were designed. The forces exerted on the penstock by the flowing water in the tunnel were also measured in the test program. An overview of the results from this research program are given.

Subject Headings: Tunnels | Hydraulic models | Hydraulic design | Conduits | Hydro power | Water tunnels | Hydrologic models | Virginia | United States

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