A Hydrodynamic Feasibility Study for a Large, High-Speed, Variable Pressure, Free Surface Water Test Facility,
Abstract
A preliminary hydrodynamic design study was made of a high-speed, free surface, variable pressure water tunnel with a top speed capability of 100 fps in a 3 ft square test section of 20 ft length. The primary objective was to determine the feasibility of modifying the existing NSRDC 36-inch water tunnel to incorporate the new test section. An analysis was carried out of the components of the desired tunnel which led to a proposed tentative configuration that should meet the original specifications. As the design of the critical components exceeds the present state of the art, model studies are strongly recommended. Energy loss estimates based on the preliminary analysis indicate that a pump of about 40 ft design head, 900 cfs discharge, and 4900 delivered HP for maximum head conditions is required. This would require approximately 6400 HP of input electrical energy. These values are considerably in excess of those currently available in the 36-inch tunnel. Increased sizing of the elements in the lower leg of the existing tunnel is also proposed. In consideration of the increased pump, power, and space requirements, it is concluded that the 36-inch tunnel cannot be practically adapted for the new test section and that extensive model testing should be initiated for a new facility. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1972
- Accession Number
- ADA040035
Entities
People
- Frank R. Schiebe
- John F. Ripken
- Joseph M. Wetzel
Organizations
- University of Minnesota