Preliminary communication

https://doi.org/10.14256/JCE.1691.2016

Dissipation of mechanical energy over spillway through counter flow

Amad.Deen Abdusalam Alghwail
Svetlana Stevović
Mohammad A. Abourohiem

Abstract

A reversed flow in form of cross-jet serves for dissipation of the energy of flow after spillway. Parameters influencing characteristics of hydraulic jump are systematically investigated via a physical model. The obtained results reveal that the reversed flow can speed up the transition from supercritical to subcritical flow by creating a forced hydraulic jump and, consequently, by shortening the protection length needed to counter scouring problems downstream of the channel, since the length of hydraulic jump is reduced by 19%. The efficiency of such energy dissipation methods can have a significant impact on the overall construction cost of hydraulic structures.

Keywords

energy dissipation; local scour; counter flow dissipater; hydraulic jump; stilling basin length

Hrčak ID:

203423

URI

https://hrcak.srce.hr/203423

Publication date:

9.7.2018.

Article data in other languages: croatian

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