Hydraulic Model Studies Of Surges Developed By Rejection Of Flow At The Forebay Pumping Plant San Luis Unit Central Valley Project California

Author : BUREAU OF RECLAMATION DENVER COLO.
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (227 download)

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Download or read book Hydraulic Model Studies of Surges Developed by Rejection of Flow at the Forebay Pumping Plant, San Luis Unit Central Valley Project, California written by BUREAU OF RECLAMATION DENVER COLO. and published by . This book was released on 1965 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data from a 1:48 scale model supplied the magnitudes and velocities of surges developed in the canal system following rejection of flow at the pumping plant, San Luis Forebay, California, and showed that a side weir was effective in reducing the surges. Data were obtained with capacitance wave probes for partial and complete rejection of flow with and without backflow from the pump discharge lines. Maximum surge peak heights were 5.4 ft for complete rejection of the maximum discharge plus 200% backflow, 4.5 ft with 150% backflow, and 1.9 ft without backflow. Velocities of propagation were 20.7, 20.7, and 19.1 fps, respectively, for the 3 conditions. A 1,500 ft-long weir on the canal sideslope reduced the maximum surge height to 1.0 ft without backflow and 1.3 ft with either 150 or 200% backflow. The reflecting and attenuating characteristics of canal structures were observed and steady-state conditions after flow rejection with the entire flow discharging over the weir were measured. The undular form of the surge wave was analyzed and several comparisons were made with theory. A 1:10 scale section model was used to develop the weir crest shape. (Author).