A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Dissipation of excess kinetic energy is often required where water is released from a reservoir through outlet works or over a spillway, or at the bottom of canal drop structures. The hydraulic jump is widely used as an effective means of dissipating energy for a range of entering Froude numbers. Relationships are presented for predicting the sequent depth ratio, energy loss, jump and roller length, and water surface profile of simple jumps. Various measures for controlling the occurrence and position of jumps are described and results provided for design purposes. The measures include a sloping surface, sills, baffle blocks and upward or downward steps. These features are incorporated in various standard stilling basin designs, for which selection criteria and geometric dimensions are provided. Energy dissipation structures that do not induce free hydraulic jumps include solid and slotted roller buckets, impact dissipators, baffles or steps on spillways and chutes, and spillway splitters.
Dissipation of excess kinetic energy is often required where water is released from a reservoir through outlet works or over a spillway, or at the bottom of canal drop structures. The hydraulic jump is widely used as an effective means of dissipating energy for a range of entering Froude numbers. Relationships are presented for predicting the sequent depth ratio, energy loss, jump and roller length, and water surface profile of simple jumps. Various measures for controlling the occurrence and position of jumps are described and results provided for design purposes. The measures include a sloping surface, sills, baffle blocks and upward or downward steps. These features are incorporated in various standard stilling basin designs, for which selection criteria and geometric dimensions are provided. Energy dissipation structures that do not induce free hydraulic jumps include solid and slotted roller buckets, impact dissipators, baffles or steps on spillways and chutes, and spillway splitters.
Energy Dissipation Structures
James, C S (author)
Hydraulic Structures ; Chapter: 6 ; 183-241
2019-12-20
59 pages
Article/Chapter (Book)
Electronic Resource
English
Energy dissipation , Hydraulic jump , Hydraulic jump characteristics , Wave suppressor , Sequent depth ratio , Energy loss , Hydraulic jump length , Hydraulic jump roller length , Water surface profile , Bed roughness , Controlled hydraulic jumps , Hydraulic jump on slope , Sills , Baffle blocks , Steps , Stilling basins , USBR stilling basins , St. Anthony falls stilling basin , Bucket-type dissipators , Impact-type dissipators , Baffled spillways , Spillway splitters Engineering , Geoengineering, Foundations, Hydraulics , Building Construction and Design , Offshore Engineering , Mechanical Statics and Structures , Engineering Fluid Dynamics
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