Sediment threshold under stream flow: A state-of-the-art review

S Dey, A Papanicolaou - KSCE Journal of Civil Engineering, 2008 - Springer
The doctoral research of Albert Frank Shields on sediment movement conducted in
Technischen Hochshcule Berlin becomes a legend that is most often referred by many …

Non-universality of von Kármán's κ in fluvial streams

R Gaudio, A Miglio, S Dey - Journal of Hydraulic Research, 2010 - Taylor & Francis
A distinguished universal aspect of wall-bounded turbulent flows is Theodore von Kármán's
universal logarithmic law (log-law) of the wall, describing the time-averaged streamwise …

Velocity profile and turbulence structure measurement corrections for sediment transport-induced water-worked bed

JH Pu - Fluids, 2021 - mdpi.com
When using point measurement for environmental or sediment laden flows, there is well-
recognised risk for not having aligned measurements that causes misinterpretation of the …

Influence of permeable beds on hydraulically macro-rough flow

H Fang, X Han, G He, S Dey - Journal of Fluid Mechanics, 2018 - cambridge.org
In this study, macro-rough flows over beds with different permeability values are simulated
using the large-eddy simulation, and the results are analysed by applying the double …

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 …

Gravel-bed hydrodynamics: Double-averaging approach

S Dey, R Das - Journal of Hydraulic Engineering, 2012 - ascelibrary.org
This study focuses on the double-averaged (DA) turbulence characteristics and the local
flow characterization in the flow zones over and within the flow-gravel-bed interface. The …

An evaluation of scour measurement devices

M Fisher, MN Chowdhury, AA Khan… - Flow Measurement and …, 2013 - Elsevier
Scour, the leading cause of bridge failures, affects hundreds of thousand bridges and costs
hundreds of millions of dollars in direct repair costs in the US alone. Furthermore, scouring …

Effects of a fully submerged boulder within a boulder array on the mean and turbulent flow fields: Implications to bedload transport

AN Papanicolaou, CM Kramer, AG Tsakiris, T Stoesser… - Acta Geophysica, 2012 - Springer
The objective of this coupled experimental and numerical study is to provide insight into the
mean and turbulent flow fields within an array of fully submerged, isolated, immobile …

Reynolds stress anisotropy with higher-order turbulence in flow through rigid emergent vegetation: An experimental study

P Kumar, A Ojha, A Sharma - Journal of Hydro-Environment Research, 2023 - Elsevier
The flow turbulence and Reynolds stress anisotropy in flow over the smooth rigid bed with
the emergent rigid vegetation in a straight channel have been experimentally investigated …

Near-bed turbulence characteristics at the entrainment threshold of sediment beds

S Dey, S Sarkar, L Solari - Journal of Hydraulic Engineering, 2011 - ascelibrary.org
This experimental study is devoted to quantification of the near-bed turbulence
characteristics at an entrainment threshold of noncohesive sediments. Near the bed, the …