Time and space nonlocalities underlying fractional-derivative models: Distinction and literature review of field applications

Y Zhang, DA Benson, DM Reeves - Advances in Water Resources, 2009 - Elsevier
We investigate the spatiotemporal nonlocality underlying fractional-derivative models as a
possible explanation for regional-scale anomalous dispersion with heavy tails. Properties of …

Effect of flow‐induced exchange in hyporheic zones on longitudinal transport of solutes in streams and rivers

A Wörman, AI Packman, H Johansson… - Water Resources …, 2002 - Wiley Online Library
Temporary storage of solutes in streams is often controlled by flow‐induced uptake in
hyporheic zones. This phenomenon accounts for the tails that are generally observed …

Numerical solution of fractional advection-dispersion equation

ZQ Deng, VP Singh, L Bengtsson - Journal of Hydraulic Engineering, 2004 - ascelibrary.org
Numerical schemes and stability criteria are developed for solution of the one-dimensional
fractional advection-dispersion equation (FRADE) derived by revising Fick's first law …

Evaluation of neuro-fuzzy GMDH-based particle swarm optimization to predict longitudinal dispersion coefficient in rivers

M Najafzadeh, A Tafarojnoruz - Environmental Earth Sciences, 2016 - Springer
In the present research, neuro-fuzzy-based group method of data handling (NF-GMDH) has
been applied to evaluate the longitudinal dispersion coefficient in rivers. The NF-GMDH …

Predicting longitudinal dispersion coefficient in natural streams using M5′ model tree

A Etemad-Shahidi, M Taghipour - Journal of hydraulic engineering, 2012 - ascelibrary.org
The longitudinal dispersion coefficient is a key parameter in determining the distribution of
pollution concentration, especially in temporally time-varying source cases after full cross …

Experiments on mass exchange between groin fields and main stream in rivers

V Weitbrecht, SA Socolofsky, GH Jirka - Journal of Hydraulic …, 2008 - ascelibrary.org
Laboratory experiments are presented that model the exchange processes between a river
and dead-water zones created by groin fields. The measurement methods include particle …

Longitudinal dispersion coefficient in single-channel streams

ZQ Deng, L Bengtsson, VP Singh… - Journal of Hydraulic …, 2002 - ascelibrary.org
Using a new channel shape equation for straight channels and a more versatile channel
shape or local flow depth equation for natural streams a method is developed for prediction …

Estimating the longitudinal dispersion coefficient in straight natural rivers

Y Wang, W Huai - Journal of Hydraulic Engineering, 2016 - ascelibrary.org
Theoretical methods have been developed to estimate the longitudinal dispersion
coefficients (k) in natural rivers. The triple integral expression for longitudinal dispersion …

A comprehensive assessment and comparison of the impacts of storage parameters on solute transport in streams using a novel framework

SK Emami, M Mazaheri - Journal of Hydrology, 2024 - Elsevier
Researchers must determine the storage parameter values to understand the storage
processes and compare them across streams. These parameters are highly variable in time …