Results 51 to 60 of about 290 (130)

A simple non-equilibrium bedload transport equation for the formation of dune in a shallowwater flow over an erodible bed

E3S Web of Conferences, 2018
In this work, we consider the long-standing problem of capturing dune formation in an erodible-bed channel at subcritical speed by using a reduced order model of depth-averaged equations.
Cañada-Pereira Pablo, Bohorquez Patricio   +1 more
doaj   +1 more source

Maximal Swimming Speed Explains Differences in Habitat Use Among Invasive Ponto‐Caspian Dikerogammarus Species (Crustacea, Amphipoda)

Journal of Zoology, EarlyView.
The three invasive Ponto‐Caspian Dikerogammarus species (D. bispinosus, D. haemobaphes, and D. villosus) show niche differentiation along the current velocity gradient. In the present study, we experimentally measured their maximal swimming speeds to test whether they coincide with their tolerances for currents.
Milán Kerekes, James W. E. Dickey, Ádám Egri, Péter Borza   +3 more
wiley   +1 more source

Spatial Decay Estimates for the Moore–Gibson–Thompson Heat Equation Based on an Integral Differential Inequality

Axioms
The present work investigates the spatial evolution characteristics of solutions to the Moore–Gibson–Thompson heat equation within a three-dimensional cylindrical geometry.
Naiqiao Qing, Jincheng Shi, Yunfeng Wen
doaj   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced Robotics Research, Volume 2, Issue 4, August 2026.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source

Finite Element Modeling Of Saint-Venant Equations For Shatt-Al Hilla

Journal of Techniques, 2020
Shatt Al-Hilla was considered one of the important branches of Euphrates River that supplies irrigation water to millions of dunams of planted areas. It is important to control the velocity and water level along the river to maintain the required level ...
Basim Sh. Abed, Hamid H. Hussain, Khalid A. Abdul-Razzaq   +2 more
doaj   +1 more source

Conservative finite-volume forms of the Saint-Venant equations for hydrology and urban drainage [PDF]

Hydrology and Earth System Sciences, 2019
New integral, finite-volume forms of the Saint-Venant equations for one-dimensional (1-D) open-channel flow are derived. The new equations are in the flux-gradient conservation form and transfer portions of both the hydrostatic pressure force and the ...
B. R. Hodges
doaj   +1 more source

Exploring the Influence of Morphologic Heterogeneity and Discharge on Downstream Transport in Streams With Multiple Logjams: 2. Insight From Numerical Models

Water Resources Research, Volume 62, Issue 8, August 2026.
Abstract Logjams in streams create complex morphologic features such as pools, bars, and branching channels that enhance stream water storage and force water through the streambed. We examine how these features alter solute retention in stream corridors as discharge increases, backwaters expand, new channels activate, and jams become more submerged ...
Xiaolang Zhang, Audrey H. Sawyer, Kamini Singha, Ellen Wohl   +3 more
wiley   +1 more source

A Scalable Approach for Identification of Reach‐Scale Hydraulic Processes to Support Flood Prediction Models

JAWRA Journal of the American Water Resources Association, Volume 62, Issue 4, August 2026.
ABSTRACT Simplification of channel routing models results in errors in streamflow predictions and uncertain flood forecasts. Conceptual frameworks have been proposed to prescribe a heterogeneous routing scheme that incorporates greater complexity where necessary, but their implementation is constrained by the need for hydraulic data that is not widely ...
Rebecca M. Diehl, David Baude, Kristen L. Underwood, Julianne E. Scamardo, Kehinde Ojasanya, Beverley C. Wemple   +5 more
wiley   +1 more source

Modified Saint-Venant equations for flow simulation in tidal rivers

Water Science and Engineering, 2012
Flow in tidal rivers periodically propagates upstream or downstream under tidal influence. Hydrodynamic models based on the Saint-Venant equations (the SVN model) are extensively used to model tidal rivers.
Xiao-qin Zhang, Wei-min Bao
doaj   +1 more source

Establishing a time‐varying flood‐wave impulse function combined with a dynamic machine‐learning technique in response to the disturbance of boundary conditions

Journal of Flood Risk Management, 2023
To seek other alternative approaches besides numerical methods, the linearized Saint Venant equations were utilized to derive the channel response functions for simulating streamflow.
Pin‐Chun Huang
doaj   +1 more source