Momentum and Kinetic Energy Coefficient Research—Ramp Flumes

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by Cassie C. Klumpp, U.S. Bureau of Reclamation, Denver, United States,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering:

Abstract: In October 1984. Reclamation Hydraulic Branch staff members investigated the operation of the A-Canal ramp at Klamath Falls, Oregon. The ramp flume was completed in 1983 as a water measurement device. Extensive data were collected at the field site: (1) velocities (vertical profile) across the channel at the entrance and throat and (2) water surface profiles through the ramp flume at varying discharges. Velocity data were used to compute values of alpha (kinetic energy coefficient) and beta (momentum coefficient). Alpha values were used to analyze ramp flume computer program that predicts head-discharge relationship in ramp flumes. The computer code uses an approximation of the kinetic energy coefficient to make adjustments in the water surface elevation calculated with an energy balance. Comparsion of the predicted head-discharges relationship determined by the computer program and the actual values computed from the Klamath Falls ramp flume data are made.

Subject Headings: Flumes | Kinetics | Computer analysis | Fluid flow | Hydro power | Computer aided operations | Head (fluid mechanics) | Oregon

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