Direct numerical simulation of a turbulent hydraulic jump: turbulence statistics and air entrainment

M Mortazavi, V Le Chenadec, P Moin… - Journal of Fluid …, 2016 - cambridge.org
We present direct numerical simulation (DNS) of a stationary turbulent hydraulic jump with
inflow Froude number of 2, Weber number of 1820 and density ratio of 831, consistent with …

High-fidelity simulation of a hydraulic jump around a surface-piercing hydrofoil

Z Li, C Liu, D Wan, C Hu - Physics of Fluids, 2021 - pubs.aip.org
For a surface-piercing hydrofoil traveling at high speed, a turbulent hydraulic jump may arise
at the intersection of the body with the free surface. This hydrodynamic phenomenon …

Simulating air entrainment and vortex dynamics in a hydraulic jump

A Witt, J Gulliver, L Shen - International Journal of Multiphase Flow, 2015 - Elsevier
The air entrainment characteristics of three separate Froude number hydraulic jumps are
investigated numerically using an unsteady RANS, realizable k–ε turbulence model, with a …

A comprehensive sub-grid air entrainment model for RaNS modeling of free-surface bubbly flows

J Ma, AA Oberai, DA Drew… - The Journal of …, 2011 - journals.sagepub.com
The simulation of free surface bubbly flows using a two-fluid model remains a challenging
problem in part due to the lack of a comprehensive air entrainment model that can predict …

Modeling air entrainment and transport in a hydraulic jump using two-fluid RANS and DES turbulence models

J Ma, AA Oberai, RT Lahey, DA Drew - Heat and mass transfer, 2011 - Springer
Abstract Both RaNS (Reynolds-averaged Navier–Stokes) and DES (Detached Eddy
Simulation) type turbulence models were used in conjunction with a two-fluid model of …

Wake behind a three-dimensional dry transom stern. Part 1. Flow structure and large-scale air entrainment

K Hendrickson, GD Weymouth, X Yu… - Journal of Fluid …, 2019 - cambridge.org
We present high-resolution implicit large eddy simulation (iLES) of the turbulent air-
entraining flow in the wake of three-dimensional rectangular dry transom sterns with varying …

Numerical investigation of vorticity and bubble clustering in an air entraining hydraulic jump

A Witt, JS Gulliver, L Shen - Computers & Fluids, 2018 - Elsevier
A high resolution computational fluid dynamics model is used to simulate a steady air
entraining laboratory scale hydraulic jump. A detailed examination of shear layer instabilities …

A simplified and versatile calibration method for multi-camera optical systems in 3D particle imaging

N Machicoane, A Aliseda, R Volk… - Review of Scientific …, 2019 - pubs.aip.org
This article describes a stereoscopic multi-camera calibration method that does not require
any optical model. It is based on a measure of the light propagation within the measurement …

Evaluating phase-detection-based approaches for interfacial velocity and turbulence intensity estimation in a highly-aerated hydraulic jump

K Wang, R Tang, R Bai, H Wang - Flow Measurement and Instrumentation, 2021 - Elsevier
Estimation of turbulence intensity within a highly-aerated turbulent flow is challenging. A
possible way is to record bubble arrival information using intrusive phase-detection probes …

Hydraulic jumps: turbulence and air bubble entrainment

H Chanson - La Houille Blanche, 2011 - shf-lhb.org
A free-surface flow can change from a supercritical to subcritical flow with a strong
dissipative phenomenon called a hydraulic jump. Herein the progress and development in …