Author: Jackson H. AblesPublisher:
ISBN:
Category : Hydraulic models
Languages : en
Pages : 78
Book Description
Vortex Problem at Intake, Lower St. Anthony Falls Lock and Dam, Mississippi River, Minneapolis, Minnesota
Author: Jackson H. AblesPublisher:
ISBN:
Category : Hydraulic models
Languages : en
Pages : 78
Book Description
Vortex Problem at Intake, Lower St. Anthony Falls Lock and Dam Mississippi River, Minneapolis, Minnesota
Author: Jackson H. AblesPublisher:
ISBN:
Category : Hydraulic models
Languages : en
Pages : 23
Book Description
Vortex Problem at Intake, Lower St. Anthony Falls Lock and Dam, Mississippi River, Minneapolis, Minnesota. Hydraulic Model Investigation
Author: Jackson H Ables (Jr)Publisher:
ISBN:
Category :
Languages : en
Pages : 74
Book Description
Tests were conducted on a 1:25-scale model to develop the most feasible and permanent solution to a vortex problem at the Lower St. Anthony Falls Lock Intake on the Mississippi River at Minneapolis, Minnesota. On 10 March 1974, a lock employee in a small boat was accidentally drawn into the vortex and killed. Since that time a delayed valve-operating schedule has been used, which results in a fill time in excess of 14 min or about twice the design fill time; and although the vortex condition is reduced, the conditions were not considered satisfactory or safe. The lock is 56 ft wide, 400 ft long, and has a lift of 25 ft. The recommended design (type 5) moved the intakes from the top of the upper gate sill and positioned a new intake in the upstream face of the sill, lowered the approach geometry in the approach to the intake ports, lengthened the bullnose pier 28.75 ft between the existing lock and a possible future auxiliary lock and replaced the 7.5-radius nose of the pier with an elliptical nose, added a vortex suppressor across the 56-ft-wide approach, and modified the culvert tainter control valve schedule from 2.07 min to 4.14 and 6.21 min. These modifications to the intake, geometry of the structure, and approach, together with the slower valve schedules, permited vortex-free operation of the lock. The lock filled in 7.9 min with a 4.14 min valve schedule.
Vortex Problem at Intake, Lower St. Anthony Falls Lock and Dam, Mississippi River, Minneapolis, Minnesota
Author: Jackson H. AblesPublisher:
ISBN:
Category : Hydraulic models
Languages : en
Pages : 76
Book Description
Swirling Flow Problems at Intakes
Author: J. KnaussPublisher: Routledge
ISBN: 1351412159
Category : Technology & Engineering
Languages : en
Pages : 125
Book Description
Fundamentals of vortex intake flow; Results theoretical & experimental work; Prediction of critical submergence; Modeling of vortices & swirling flows; Design; Intake structures; Pump sumps; Vortex-flow intakes. This volume forms an essential reference work for anyone involved in intakes, either as a practising design engineer or research worker. Water Power & Dam Constr., July 1988.The book is essential reading for postgraduate students & researchers alike and a very valuable aid to design engineers. Hydrol.Sc.Jrl., 33(3), 1988.
Selected Water Resources Abstracts
Author: Monthly Catalog of United States Government Publications
Author: Hydraulic Gates and Valves
Author: Jack LewinPublisher: Thomas Telford
ISBN: 9780727729903
Category : Technology & Engineering
Languages : en
Pages : 314
Book Description
Based on the author's extensive practical experience, this new edition will act as a definitive reference work on gates and valves. Hydraulic gates and valves in free surface flow and submerged outlets: 2nd edition will provide you with a comprehensive overview of the subject and clearly describes the principle options available to engineers and designers and outlines the main advantages and disadvantages of all hydraulic gates and valves, highlighting potential problems in their use. This fully revised edition includes: Information about new types of water-operated automatic gates, rolling weir gates, fuse gates and an extended part on barrier gates and their details The sections on seals, the trunnions of radial gates, ice formation, gate operation and structural design have all been expanded New sections on hazard and reliability of gates, earthquake effects on gates and operating machinery, environmental impact and aesthetics, as well as maintenance An appendix on the calculation of hydrostatic loads on radial gates has been set out Hydraulic gates and valves in free surface flow and submerged outlets: 2nd edition will be of great benefit to engineers who work or design project
List of Publications of the U.S. Army Engineer Waterways Experiment Station
Author: U.S. Army Engineer Waterways Experiment StationPublisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 624
Book Description
Small Scale Hydropower
Author: Publisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 630
Book Description