Air–water flows

D Valero, S Felder, M Kramer, H Wang… - Journal of Hydraulic …, 2024 - Taylor & Francis
High Froude-number open-channel flows can entrain significant volumes of air, a
phenomenon that occurs continuously in spillways, in free-falling jets and in hydraulic …

[PDF][PDF] Turbulence and air entrainment in hydraulic jumps

H Wang - 2014 - researchgate.net
A hydraulic jump is a sudden transition from a supercritical flow to a subcritical flow. It is an
extremely turbulent flow associated with the development of large-scale turbulence, surface …

An experimental study of turbulent two-phase flow in hydraulic jumps and application of a triple decomposition technique

H Wang, S Felder, H Chanson - Experiments in fluids, 2014 - Springer
Intense turbulence develops in the two-phase flow region of hydraulic jump, with a broad
range of turbulent length and time scales. Detailed air–water flow measurements using …

U 形渠道机翼形量水槽水跃数值模拟与试验研究

孙斌, 吕宏兴, 张宽地, 石喜, 周亚森 - 实验流体力学, 2013 - syltlx.com
量水槽是灌区常见的特设量水设备, 而槽后水力特性是判断其选型是否合理的重要指标之一.
以某小型灌区末级灌溉渠系改造工程为原型, 针对两种不同工况, 采用基于TruVOF …

Exploratory study of submerged hydraulic jumps with blocks

A Habibzadeh, S Wu, F Ade, N Rajaratnam… - Journal of Hydraulic …, 2011 - ascelibrary.org
A preliminary study on submerged jumps with baffle walls and blocks downstream of a
sluice gate was conducted. Two series of experiments were carried out on baffle walls and …

LIDAR observations of free-surface time and length scales in hydraulic jumps

L Montano, S Felder - Journal of Hydraulic Engineering, 2020 - ascelibrary.org
A hydraulic jump is a complex, rapidly varied flow phenomenon occurring in the transition
from supercritical to subcritical flows. Hydraulic jumps are characterized by instationary …

A comparative study of pre-aeration effects on hydraulic jump air–water flow properties at high Froude numbers

R Tang, R Bai, H Wang - Environmental Fluid Mechanics, 2021 - Springer
A hydraulic jump forming in the stilling basin at the base of a high-head dam spillway is often
characterized by high Froude number and inflow pre-aeration conditions. Although the air …

Numerical investigation of critical hydraulic parameters using FLOW-3D: a case study of taunsa barrage, Pakistan

MW Zaffar, I Haasan, AR Ghumman - Fluids, 2023 - mdpi.com
Hydraulic structures, such as barrages, play an important role in the sustainable
development of several regions worldwide. The aim of this novel study is to identify the …

Designing experiments to study dam breach hydraulic phenomena

S Amaral, L Caldeira, T Viseu… - Journal of Hydraulic …, 2020 - ascelibrary.org
The success of experimental studies to investigate hydraulics of dam breaching requires an
adequate specification of geotechnical parameters and control over its realization in field or …

Characterisation of transverse turbulent motion in quasi-two-dimensional aerated flow: application of four-point air-water flow measurements in hydraulic jump

H Wang, H Chanson - Experimental Thermal and Fluid Science, 2019 - Elsevier
The measurement of turbulent velocity in highly aerated flow is difficult because of the
presence of air bubbles. The characterisation of three-dimensional velocity field in highly …