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https://hdl.handle.net/11681/13565| Title: | Pumping station inflow--discharge hydraulics : generalized pump sump research study |
| Authors: | Triplett, Glenn R. Fletcher, Bobby P. Grace, John L. Robertson, John J. |
| Keywords: | Automatic data acquisition system Microcomputer Pumping stations Pump location Pump performance Scale effects Submergence Sump appurtenances Sumps Vortex suppressors Vortices Pumping machinery Hydraulic structures |
| Publisher: | Hydraulics Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Series/Report no.: | Technical report (U.S. Army Engineer Waterways Experiment Station) ; HL-88-2. |
| Description: | Technical Report Abstract: This report contains the first phase of a continuing sump research study for typical small pumping stations (capacities less than 200 cfs) with relatively low submergences. The facility consists of three operational mixed-flow pumps and one suction or dummy pump. An automatic data acquisition system is housed in an environmentally controlled building. Comparison testing was conducted with an operational pump and the dummy pump. Optimum location of the pump within the sump was determined by a wide range of testing. Surface vortex suppressors and other appurtenances were tested to improve approach inflow conditions and diminish vortex action. The improved sump design with optimum pump location was used for repetitive tests to determine base data to plot performance "signature" curves for each of the three operational pumps. The coordinates of these signature curves were installed in the permanent memory of the microcomputer for comparison of subsequent sump designs. An 0.8D to 2-D-high vertical drop was located across the sump approach at varying distances from the pump. Test results showed only minor deviations from the signature data; when the distance was equal to or greater than 2D, the flow was in the lateral plane, and the submergence was equal to or greater than 0.47D. Criteria for similarity of surface vortices in pump station models are discussed using a search of the literature. Similarity of submerged vortices is investigated in physical models of different size. NOTE: This file is large. Allow your browser several minutes to download the file. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/13565 |
| Appears in Collections: | Technical Report |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| TR-HL-88-2.pdf | 36.22 MB | Adobe PDF |  View/Open |