Numerical simulation of hydraulic jumps. Part 1: Experimental data for modelling performance assessment

D Valero, N Viti, C Gualtieri - Water, 2018 - mdpi.com
Hydraulic jumps have been the object of extensive experimental investigation, providing the
numerical community with a complete case study for models' performance assessment. This …

Reformulating self-aeration in hydraulic structures: Turbulent growth of free surface perturbations leading to air entrainment

D Valero, DB Bung - International Journal of Multiphase Flow, 2018 - Elsevier
A new formulation for the prediction of free surface dynamics related to the turbulence
occurring nearby is proposed. This formulation, altogether with a breakup criterion, can be …

History and physical significance of the roughness Froude number

TL Wahl - Journal of Hydraulic Research, 2023 - Taylor & Francis
The roughness Froude number is a relatively new dimensionless parameter that began
appearing in the hydraulic engineering literature in the late 1970s, first for the analysis of …

High-velocity air-water flows downstream of sluice gates including selection of optimum phase-detection probe

S Felder, B Hohermuth, RM Boes - International Journal of Multiphase Flow, 2019 - Elsevier
High-velocity air-water flows occur commonly in hydraulic structures including low-level
outlets. Novel experiments of air-water flow patterns and properties were conducted along a …

Turbulence and self-similarity in highly aerated shear flows: The stable hydraulic jump

M Kramer, D Valero - International Journal of Multiphase Flow, 2020 - Elsevier
Hydraulic jumps are oftentimes encountered in natural and human-made environments. The
transition from supercritical to subcritical flow involves large energy dissipation rates and …

Case study of prototype hydraulic jump on slope: Air entrainment and free-surface measurement

Z Bai, R Bai, R Tang, H Wang, S Liu - Journal of Hydraulic …, 2021 - ascelibrary.org
This paper presents a case study of a prototype B-type hydraulic jump produced
downstream an irrigation-regulating gate in a natural river. The inflow Froude number is Fr …

On the estimation of free-surface turbulence using ultrasonic sensors

G Zhang, D Valero, DB Bung, H Chanson - Flow Measurement and …, 2018 - Elsevier
Accurate determination of free-surface dynamics has attracted much research attention
during the past decade and has important applications in many environmental and water …

Self-aeration and flow resistance in high-velocity flows down spillways with microrough inverts

S Felder, A Severi, M Kramer - Journal of Hydraulic Engineering, 2023 - ascelibrary.org
Free-surface aeration is a key characteristic of high-velocity flows on spillways. Despite their
common use as conveyance structures, there is a research gap in the understanding of …

Air demand of a hydraulic jump in a closed conduit

P Li, DZ Zhu, T Xu, J Zhang - Journal of Hydraulic Engineering, 2022 - ascelibrary.org
Understanding the air demand of a hydraulic jump in a closed conduit is important in
hydropower operations and urban sewer designs. In this study, physical experiments are …

Can we improve the non-intrusive characterization of high-velocity air–water flows? Application of LIDAR technology to stepped spillways

M Kramer, H Chanson, S Felder - Journal of Hydraulic Research, 2020 - Taylor & Francis
The characterization of high-velocity air–water flows is crucial for the design of hydraulic
structures including stepped spillways. Recent experimental advances have shown that …