Roughness in the earth sciences

MW Smith - Earth-Science Reviews, 2014 - Elsevier
Rough surfaces are ubiquitous in nature. Near-surface processes both encounter and create
surface roughness. Recent advances in surveying have improved the resolution, extent and …

Representing natural and artificial in‐channel large wood in numerical hydraulic and hydrological models

S Addy, ME Wilkinson - Wiley Interdisciplinary Reviews: Water, 2019 - Wiley Online Library
The influence of naturally occurring in‐channel large wood (LW) on the hydraulics,
hydrology and geomorphology of rivers is well documented. To inform management and …

Friction factor decomposition for rough-wall flows: theoretical background and application to open-channel flows

VI Nikora, T Stoesser, SM Cameron… - Journal of Fluid …, 2019 - cambridge.org
A theoretically based relationship for the Darcy–Weisbach friction factor for rough-bed open-
channel flows is derived and discussed. The derivation procedure is based on the double …

Sticky stuff: Redefining bedform prediction in modern and ancient environments

RJ Schindler, DR Parsons, L Ye, JA Hope… - …, 2015 - pubs.geoscienceworld.org
The dimensions and dynamics of subaqueous bedforms are well known for cohesionless
sediments. However, the effect of physical cohesion imparted by cohesive clay within mixed …

[图书][B] Practical channel hydraulics: Roughness, conveyance and afflux

DW Knight, C Hazlewood, R Lamb, PG Samuels… - 2018 - taylorfrancis.com
Practical Channel Hydraulics is a technical guide for estimating flood water levels in rivers
using the innovative software known as the Conveyance and Afflux Estimation System (CES …

A conservative strategy to couple 1D and 2D models for shallow water flow simulation

M Morales-Hernández, P García-Navarro, J Burguete… - Computers & …, 2013 - Elsevier
A 1D–2D coupled numerical model is presented in this work. 1D and 2D models are
formulated using a conservative upwind cell-centred finite volume scheme. The …

Flood mapping using LIDAR DEM. Limitations of the 1-D modeling highlighted by the 2-D approach

P Costabile, F Macchione, L Natale, G Petaccia - Natural Hazards, 2015 - Springer
Nowadays, the use of 2-D fully dynamic models represents the most reliable approach for
flood inundation and flood hazard studies, especially in complex applications. However, 1-D …

Friction modeling of flood flow simulations

V Bellos, I Nalbantis, G Tsakiris - Journal of Hydraulic Engineering, 2018 - ascelibrary.org
A new, three-parameter friction model at the boundaries of free surface flow is proposed.
The model is valid for all flow and roughness characteristics and it is proposed to replace the …

[HTML][HTML] Optimizing attraction flow for upstream fish passage at a hydropower dam employing 3D Detached-Eddy Simulation

DC Gisen, RB Weichert, JM Nestler - Ecological Engineering, 2017 - Elsevier
Restoration of upstream fish passage requires construction of efficient fishways. Selection of
attraction flow rates and entrance velocities is one of the fundamental research tasks on …

Debris-flow velocities and superelevation in a curved laboratory channel

C Scheidl, BW McArdell… - Canadian Geotechnical …, 2015 - cdnsciencepub.com
The vortex equation is often used to estimate the front velocity of debris flows using the
lateral slope of the flow surface through a channel bend of a given radius. Here we report on …