Unmanned aerial vehicles in hydrology and water management: Applications, challenges, and perspectives

BS Acharya, M Bhandari, F Bandini… - Water Resources …, 2021 - Wiley Online Library
The hydrologic sciences and water resources management have long depended on a
combination of in situ measurements and remotely sensed data for research and regulatory …

Velocity bias in intrusive gas-liquid flow measurements

B Hohermuth, M Kramer, S Felder, D Valero - Nature communications, 2021 - nature.com
Gas–liquid flows occur in many natural environments such as breaking waves, river rapids
and human-made systems, including nuclear reactors and water treatment or conveyance …

[HTML][HTML] Reynolds stress modeling of supercritical narrow channel flows using OpenFOAM: Secondary currents and turbulent flow characteristics

S Kadia, N Rüther, I Albayrak, E Pummer - Physics of Fluids, 2022 - pubs.aip.org
In this study, the full Launder, Reece and Rodi pressure-strain model, and nonlinear
boundary damping functions were incorporated in OpenFOAM® to simulate the turbulence …

Influence of bridge pier shape on flow field and scour geometry

BA Vijayasree, TI Eldho, BS Mazumder… - International Journal of …, 2019 - Taylor & Francis
The objective of the present paper is to investigate experimentally the flow field and the local
scour around bridge pier of different shapes on a sediment bed. Experiments were carried …

Turbulence in mobile-bed streams

S Dey, R Das, R Gaudio, SK Bose - Acta Geophysica, 2012 - Springer
This study is devoted to quantify the near-bed turbulence parameters in mobile-bed flows
with bed-load transport. A reduction in near-bed velocity fluctuations due to the decrease of …

An ordinary differential equation for velocity distribution and dip-phenomenon in open channel flows

R Absi - Journal of Hydraulic Research, 2011 - Taylor & Francis
An ordinary differential equation (ODE) for velocity distribution in open channel flows is
presented based on an analysis of the Reynolds-averaged Navier–Stokes equations and a …

Prediction of river discharges at confluences based on Entropy theory and surface-velocity measurements

F Bahmanpouri, S Barbetta, C Gualtieri… - Journal of …, 2022 - Elsevier
Hydrodynamic features of the confluence zone of large rivers are complicated because of
their three-dimensional flow structure. The confluence between the Rio Negro and the Rio …

Considerations on direct stream flow measurements using video imagery: Outlook and research needs

M Muste, HC Ho, D Kim - Journal of Hydro-environment Research, 2011 - Elsevier
The paper presents measurements acquired with Large-Scale Particle Image Velocimetry
(LSPIV) during normal flows and floods in the Iowa River (USA). For normal flows …

Turbulence characteristics in supercritical open channel flows: Effects of Froude number and aspect ratio

C Auel, I Albayrak, RM Boes - Journal of Hydraulic Engineering, 2014 - ascelibrary.org
An experimental investigation of supercritical uniform and gradually varied open channel
flows is presented for a wide range of Froude numbers and flume width-to-flow depth aspect …

[HTML][HTML] The effect of cross-sectional geometry on the high-speed narrow open channel flows: An updated Reynolds stress model study

S Kadia, L Lia, I Albayrak, E Pummer - Computers & Fluids, 2024 - Elsevier
This numerical study investigates the effect of the channel cross-sectional geometries,
namely archway, circular, and horseshoe on the mean velocity fields, secondary currents …