3D numerical modelling of a willow vegetated river/floodplain system

Wilson, Catherine; Yağci, Oral; Rauch, Hans Peter; Olsen, Nils

doi:10.1016/j.jhydrol.2005.11.027

Cited by 63 publications

(37 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, some scholars have studied the influence of plants on the structure of water flow, such as changes to flow turbulence intensity and boundary shear force (Ikeda et al, 1996). Considering the height and bending degree of the willow species by water flooding, the vegetation 10 resistance was introduced into the Navier-Stokes equation and numerical simulation of the three-dimensional flow field of the river and the floodplain wetland was carried out (Wilson, 2006). Taking the reed community as the research object, Shi et al (2001) carried out an experiment to investigate the water resistance of non-submerged reeds and the relationship between the density and the resistance of reeds.…”

Section: Figure 1 Suaeda Heteroptera In Liao River Estuary Wetlandmentioning

confidence: 99%

Numerical study of hydrodynamic and salinity transport process in Pink Beach wetlands of Liao River Estuary, China

Qiao¹,

Zhang²,

Jiang³

et al. 2018

Preprint

View full text Add to dashboard Cite

show abstract

Section: Figure 1 Suaeda Heteroptera In Liao River Estuary Wetlandmentioning

confidence: 99%

Numerical study of hydrodynamic and salinity transport process in Pink Beach wetlands of Liao River Estuary, China

Qiao¹,

Zhang²,

Jiang³

et al. 2018

Preprint

View full text Add to dashboard Cite

show abstract

“…In this theory they added the turbulent kinetic energy equation for two layers model. Ref [14] used 3D finite element program (SSIM) for the study of the vegetation influence in velocity distribution. This model solves the momentum and continuity equations for each element and uses the k-ε model for the turbulence modeling.…”

Section: Introductionmentioning

confidence: 99%

Experiments and Numerical Analysis of Flow in an Open Channel with Gravel Bed

et al. 2018

View full text Add to dashboard Cite

Abstract:In this study laboratory experiments and numerical simulations of flow in an open channel with gravel bed of 2 cm thickness are presented and compare. The experimental results were obtained using 2D Particle Image Velocimetry (PIV). For the numerical simulation of gravel bed, a porous layer of thickness 2 cm and appropriate porosity (ε = 0.80, volume of fluid over total porous medium volume) was used. In order to validate the results of the CFX based numerical model, computed quantities are compared with experimental data from PIV measurements. Vertical distributions of velocity above the permeable layer are presented for different total flow depths. The determination of the velocity profiles is of practical importance in the design of open channels. The findings are supported by both laboratory measurements and numerical modelling results and can be useful for engineering applications. In all cases there is a good agreement between experimental and numerical results.

show abstract

“…On the one hand, generally, hydro-ecological studies are very site-specific and based on particular observations at a small detailed scale. On the other hand, fluvial modelling should consider many interactions, which have, in principle, 3D [5,6] or, at least, 2D spatial features [7,8], besides the temporal variability embedded in natural systems. Therefore, as a result, numerical models can be quite hard to manage under the engineering and computing points of view, especially in the…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Analysis of a Riparian Vegetation Growth Model

Nones¹,

Varrani

2016

Environments

View full text Add to dashboard Cite

Abstract:The paper presents a sensitivity analysis of two main parameters used in a mathematic model able to evaluate the effects of changing hydrology on the growth of riparian vegetation along rivers and its effects on the cross-section width. Due to a lack of data in existing literature, in a past study the schematization proposed here was applied only to two large rivers, assuming steady conditions for the vegetational carrying capacity and coupling the vegetal model with a 1D description of the river morphology. In this paper, the limitation set by steady conditions is overcome, imposing the vegetational evolution dependent upon the initial plant population and the growth rate, which represents the potential growth of the overall vegetation along the watercourse. The sensitivity analysis shows that, regardless of the initial population density, the growth rate can be considered the main parameter defining the development of riparian vegetation, but it results site-specific effects, with significant differences for large and small rivers. Despite the numerous simplifications adopted and the small database analyzed, the comparison between measured and computed river widths shows a quite good capability of the model in representing the typical interactions between riparian vegetation and water flow occurring along watercourses. After a thorough calibration, the relatively simple structure of the code permits further developments and applications to a wide range of alluvial rivers.

show abstract

3D numerical modelling of a willow vegetated river/floodplain system

Cited by 63 publications

References 9 publications

Numerical study of hydrodynamic and salinity transport process in Pink Beach wetlands of Liao River Estuary, China

Numerical study of hydrodynamic and salinity transport process in Pink Beach wetlands of Liao River Estuary, China

Experiments and Numerical Analysis of Flow in an Open Channel with Gravel Bed

Sensitivity Analysis of a Riparian Vegetation Growth Model

Contact Info

Product

Resources

About