Direct numerical simulation of turbulent channel flow over a surrogate for Nikuradse-type roughness
A tiled approach to rough surface simulation is used to explore the full range of roughness
Reynolds numbers, from the limiting case of hydrodynamic smoothness up to fully rough …
Reynolds numbers, from the limiting case of hydrodynamic smoothness up to fully rough …
Boundary layer dynamics and bottom friction in combined wave–current flows over large roughness elements
In the coastal ocean, interactions of waves and currents with large roughness elements,
similar in size to wave orbital excursions, generate drag and dissipate energy. These …
similar in size to wave orbital excursions, generate drag and dissipate energy. These …
Low relative-submergence effects in a rough-bed open-channel flow
M Rouzes, FY Moulin, E Florens… - Journal of Hydraulic …, 2019 - Taylor & Francis
Multi-plane stereoscopic PIV measurements were performed in an open-channel flume fitted
with cubes to investigate very low submergence ratios, h/k={1.5, 2, 3}, where h is the water …
with cubes to investigate very low submergence ratios, h/k={1.5, 2, 3}, where h is the water …
Structure functions and invariants of the anisotropic Reynolds stress tensor in turbulent flows on water-worked gravel beds
In this paper, a statistical description of turbulence in flow on a water-worked gravel-bed is
presented by applying the laws of turbulence in conjunction with the double-averaging …
presented by applying the laws of turbulence in conjunction with the double-averaging …
On the structure of turbulent gravel bed flow: Implications for sediment transport
The main objective of this study was to examine the turbulent flow field over gravel particles
as a first step towards understanding sediment transport in a gravel bed river. Specifically …
as a first step towards understanding sediment transport in a gravel bed river. Specifically …
Statistical characterization of unworked and water-worked gravel-bed roughness structures
Gravel-bed roughness structures for an unworked bed and a water-worked bed are
analysed at different topographic scales measuring the bed surfaces by a 3D terrestrial laser …
analysed at different topographic scales measuring the bed surfaces by a 3D terrestrial laser …
Spatial structure of near-bed flow properties at the grain scale
J Groom, H Friedrich - Geomorphology, 2019 - Elsevier
Expanding the existing knowledge of the role of roughness on near-bed flow properties is
vital to provide deeper insights into the interactions between the flow, sediment transport …
vital to provide deeper insights into the interactions between the flow, sediment transport …
Stereo-PIV measurements within the canopy in open-channel flows
M Trevisson, Y Akutina, O Eiff - Experiments in Fluids, 2024 - Springer
Measuring the flow field not just above but also inside the canopy of rough beds in open-
channel flows is challenging when optical access from below or the side is not possible. To …
channel flows is challenging when optical access from below or the side is not possible. To …
Velocity Profiles in Gravel Beds Based on Refractive Index Matching Experiments
The space-and time-averaged velocity profiles in gravel beds show some features that
differentiates them from that established in smooth beds, but the obstruction posed by the …
differentiates them from that established in smooth beds, but the obstruction posed by the …
Sampling variability in estimates of flow characteristics in coarse‐bed channels: Effects of sample size
P Cienciala, MA Hassan - Water Resources Research, 2016 - Wiley Online Library
Adequate description of hydraulic variables based on a sample of field measurements is
challenging in coarse‐bed streams, a consequence of high spatial heterogeneity in flow …
challenging in coarse‐bed streams, a consequence of high spatial heterogeneity in flow …