energy dissipators and hydraulic jump pdf

Energy dissipators and hydraulic jump pdf

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Energy Dissipators and Hydraulic Jump

Bibliographic Information

Hydraulic jump problems and solutions pdf

Energy Dissipators and Hydraulic Jump

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Energy Dissipators and Hydraulic Jump

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Bibliographic Information

Water Supply 1 June ; 20 4 : — In skimming flow, a uniform flow can be achieved and the flow depth, velocity and air concentration remain constant if a stepped spillway is sufficiently long. In this study, physical model experiments were performed to investigate the uniform characteristics and energy dissipation of a hydraulic-jump-stepped spillway, which is a new type of stepped spillway for increasing the unit discharge capacity and energy dissipation. Based on the redefinition of uniform flow, experimental results show that at a given stepped spillway slope, a smaller height for the beginning of the uniform flow region, a greater uniform aerated flow depth and a greater uniform equivalent clear water flow depth can be obtained as compared with the traditional stepped spillway due to strong aeration in the aeration basin. Under the condition of uniform flow, the energy dissipation rate of stepped spillways can be estimated by the equivalent clear water flow depth with given inflow conditions. Compared with the traditional stepped spillway, the uniform flow over the hydraulic-jump-stepped spillway has a smaller specific energy, revealing that the hydraulic-jump-stepped spillway is more advantageous for dissipating energy, especially at large unit discharges.

Skip to main content. Search form Search. Hydraulic jump problems and solutions pdf. Hydraulic jump problems and solutions pdf hydraulic jump problems and solutions pdf An extensive literature has been developed for this type of engineering by Hager , Vischer , Chanson , Khatsuria and Abdul Matin et al. It is characterized by a sudden increase in water depth and loss in the energy.

Hydraulic jump problems and solutions pdf

It seems that you're in Germany. We have a dedicated site for Germany. Stilling basins utili z ing a hydraulic jump for energy dissipation are w i d e l y used in hydraulic engineering.

Energy Dissipators and Hydraulic Jump

Show all documents The maximum energy dissipation occurs when a free hydraulic jump forms near the toe of ogee spillway or front of jump coincides with the section where the supercritical pre jump depth is minimum [2], [3]. The required length of apron depends upon the length and location of the jump for design discharge condition which in turndepends on the pre jump depth y1 and the relative. As such, being able to reliably predict the location and character of the hydraulic jump is important in the design of a course. Typically a hydraulic jump forms when high velocity flow discharges into a channel or structure that sustains a lower velocity flow. It is characterised by flow transitioning from supercritical to subcritical flow by definition a Froude number less than 1 means the flow is subcritical and greater than 1 the flow is supercritical. When the change from supercritical to subcritical flow occurs the transition is sudden and causes an abrupt discontinuity of the water surface and an associated loss in energy which can result in a stationary wave.

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Journal Identifiers

A hydraulic jump is a phenomenon in the science of hydraulics which is frequently observed in open channel flow such as rivers and spillways. When liquid at high velocity discharges into a zone of lower velocity, a rather abrupt rise occurs in the liquid surface. The rapidly flowing liquid is abruptly slowed and increases in height, converting some of the flow's initial kinetic energy into an increase in potential energy, with some energy irreversibly lost through turbulence to heat. In an open channel flow, this manifests as the fast flow rapidly slowing and piling up on top of itself similar to how a shockwave forms. It was first observed and documented by Leonardo da Vinci in the s.

3 comments

  • Kemberley T. 19.11.2020 at 03:41

    A hydraulic jump mainly serves as an energy dissipator downstream of hydraulic structures.

    Reply
  • Desideria R. 23.11.2020 at 05:58

    Stilling basins utili z ing a hydraulic jump for energy dissipation are w i d e l y DRM-free; Included format: PDF; ebooks can be used on all reading devices.

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  • Edaline J. 26.11.2020 at 01:28

    Skip to search form Skip to main content You are currently offline.

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