Abstract
Hydraulic jumps have been the object of extensive experimental investigation, providing the numerical community with a complete case study for models’ performance assessment. This study constitutes an exhaustive literature review on hydraulic jumps’ experimental datasets. Both mean and turbulent parameters characterising hydraulic jumps are comprehensively discussed, presenting at least a reference to one dataset. Three studies stand out over other datasets due to their completeness. Using them as reference for model validation may ensure homogeneous and comparable performance assessment for the upcoming numerical models. Experimental inaccuracies are also addressed, allowing the numerical modeller to understand the uncertainties of reduced physical models and its limitations. Part 2 presents the three-dimensional numerical investigations to date and their main achievements.
Highlights
Hydraulic jumps have been largely studied due to their relevance in hydraulic engineering applications [1,2,3]
When a hydraulic jump takes place, supercritical high velocity flows abruptly slow down, leading to a subcritical flow, which benefits structural stability and safe hydraulic conditions for river environments. This rapidly varied flow holds a considerable relevance in environmental hydraulics, as it leads to strong reoxygenation ratios, and in eco-hydraulics where unprecedented hyporheic paths in river flows appear due to the occurring dynamic pressures [4,5]
As discussed by Blocken and Gualtieri [89], the interest of the hydraulic and environmental engineers about computational fluid dynamics (CFD) methods is shifted from the typical aerodynamics problems
Summary
Hydraulic jumps have been largely studied due to their relevance in hydraulic engineering applications [1,2,3]. When a hydraulic jump takes place, supercritical high velocity (oftentimes aerated) flows abruptly slow down, leading to a subcritical flow, which benefits structural stability and safe hydraulic conditions for river environments. This rapidly varied flow holds a considerable relevance in environmental hydraulics, as it leads to strong reoxygenation ratios, and in eco-hydraulics where unprecedented hyporheic paths in river flows appear due to the occurring dynamic pressures [4,5]. In Part 1 of this study, the most relevant features of the classic hydraulic jump are dissected, briefly presenting the basic principles and providing some insight on the flow structure. The reader is addressed to Part 2 [26] for an overview on three-dimensional numerical modelling techniques and current achievements on the hydraulic jump numerical modelling
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