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Published: Građevinar 70 (2018) 5
Paper type: Preliminary report
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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

HOW TO CITE THIS ARTICLE:

Alghwail, A. D. A., Stevović, S., Abourohiem, M. A.: Dissipation of mechanical energy over spillway through counter flow, GRAĐEVINAR, 70 (2018) 5, pp. 377-391, doi: https://doi.org/10.14256/JCE.1691.2016

OR:

Alghwail, A. D. A., Stevović, S., Abourohiem, M. A. (2018). Dissipation of mechanical energy over spillway through counter flow, GRAĐEVINAR, 70 (5), 377-391, doi: https://doi.org/10.14256/JCE.1691.2016

LICENCE:

Creative Commons License
This paper is licensed under a Creative Commons Attribution 4.0 International License.
Authors:
1 Abdusalam WEB
Amad Deen Abdusalam Alghwail
Elmergib University, Civil Engineering department, Libya
1111
Svetlana Stevović
Union-Nikola Tesla University, Serbia
3 mohammad WEB
Mohammad A. Abourohiem
Alexandria University, Egypt
Faculty of Civil Engineering