Hydraulic Jumps on New Roughened Beds

Ezizah, G.; Yousif, N. B.; Sefidgar, Mostafa

doi:10.3923/ajaps.2012.96.106

Cited by 10 publications

(1 citation statement)

References 6 publications

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“…In this analysis, the importance of Reynold's number (Re) can be ignored since, as in Abdeen et al (2015), the viscous force usually has an almost negligible effect in hydraulic jumping and open path [14,15]. Ezizah et al (2012) studied the impact on the hydraulic jump length of the increase in strength and roughness length parameters [16]. Valero et al (2015) have recently numerically analyzed the effects of chute blocks on both the length and stability of the hydraulic jump for both adverse conditions and design.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Different Shaped Baffle Blocks on the Energy Dissipation

et al. 2020

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Stilling basins can be defined as energy dissipaters constructed of the irrigation systems. This study aims at investigating the performance of the new seven baffle blocks design in terms of reducing the dimensions of stilling basins in irrigation systems. In order to assess the hydraulic efficiency of a new model for baffle block used in stilling basins, a Naval Research Laboratory (NRL) has conducted. The results of this study demonstrate that the performance of the new baffle block, in term of hydraulic jump length reduction and hydraulic energy dissipation, it's better than standard blocks. However, the ratios of the drag resistance attributed to the new baffles block (FB / F2) have been larger than that applied on the normal block. It was found that the new block dissipates the energy by 9.31% more than the concrete block, and decreases the length of the hydraulic jump by 38.6% in comparison with the standard blocks. However, the new block maximizes the drag force ratio by 98.6% in comparison with the standard baffle blocks. The findings indicated that in terms of energy reduction and dissipation in the length of the hydraulic jump, the new block is superior to the other kinds.

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