Građevinar, Vol. 70 No. 05., 2018.
Prethodno priopćenje
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
Sažetak
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.
Ključne riječi
energy dissipation; local scour; counter flow dissipater; hydraulic jump; stilling basin length
Hrčak ID:
203423
URI
Datum izdavanja:
9.7.2018.
Posjeta: 1.552 *