Journal ArticleDOI
Three-layer model for vertical velocity distribution in open channel flow with submerged rigid vegetation
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TLDR
In this paper, a three-layer model is proposed to predict the vertical velocity distribution in an open channel flow with submerged vegetation, and the results show that the velocity profile consists of three hydrodynamic regimes (i.e., the upper non-vegetated layer, the outer and bottom layer within vegetation); accordingly different methods had been adopted to describe the vertical velocities distribution.About:
This article is published in Advances in Water Resources.The article was published on 2009-04-01. It has received 149 citations till now. The article focuses on the topics: Shear velocity & Potential flow.read more
Citations
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Journal ArticleDOI
Flow resistance of emergent rigid and flexible floodplain vegetation
Jochen Aberle,Juha Järvelä +1 more
TL;DR: In this article, the current state-of-the-art for the parameterization of vegetative form drag and associated flow resistance was explored with a view on practical applicability, and it was shown that describing the key hydraulic properties of plants, geometry, and flexibility with species-specific parameters is superior to the rigid cylinder analogy commonly used in hydraulic engineering practice.
Journal ArticleDOI
Effects of vegetation on flow and sediment transport: comparative analyses and validation of predicting models
TL;DR: In this article, the authors compared the performance of a large number of models on flow resistance, vegetation drag, vertical velocity profiles and bed-shear stresses in vegetated channels.
Journal ArticleDOI
A two-layer approach for depth-limited open-channel flows with submerged vegetation
Wonjun Yang,Sung Uk Choi +1 more
TL;DR: A two-layer approach for depth-limited open-channel flow with submerged vegetation is described in this article, where a momentum balance is applied to each layer and expressions for the mean velocities are proposed.
Journal ArticleDOI
Flow dynamics and sediment transport in vegetated rivers: A review
TL;DR: A review of methods, general laws, qualitative cognition, and quantitative models regarding the interplay between aquatic plants, flow dynamics, and sediment transport in vegetated rivers is in order as mentioned in this paper.
Journal ArticleDOI
Interactions between vegetation, water flow and sediment transport: A review
TL;DR: In this paper, the relationship between vegetation and the sediment transport is discussed, and the effect of vegetation characteristics, such as shape, flexibility and the height, have significant effects on the flow structures.
References
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Book
Boundary layer theory
TL;DR: The flow laws of the actual flows at high Reynolds numbers differ considerably from those of the laminar flows treated in the preceding part, denoted as turbulence as discussed by the authors, and the actual flow is very different from that of the Poiseuille flow.
Journal ArticleDOI
Flow and transport in channels with submerged vegetation
Heidi Nepf,Marco Ghisalberti +1 more
TL;DR: In this article, the authors reviewed recent work on flow and transport in channels with submerged vegetation, including discussions of turbulence structure, mean velocity profiles, and dispersion. And they showed that the dominant characteristic of the flow is the generation of a shear-layer at the top of the canopy.
Journal ArticleDOI
open-channel flow through simulated vegetation: Suspended sediment transport modeling
Fabián López,Marcelo H. Garcia +1 more
TL;DR: In this article, a two-equation turbulence model was used to determine the mean flow and turbulence structure of open channels through simulated vegetation, thus providing the necessary information to estimate suspended sediment transport processes.
Journal ArticleDOI
Hydraulic resistance of submerged flexible vegetation
Ursula Stephan,Dieter Gutknecht +1 more
TL;DR: In this article, the influence of roughness caused by aquatic vegetation (av), in particular submerged macrophytes, on the overall flow field was analyzed, where the authors focused on the definition of a characteristic hydraulic roughness parameter to quantify the resistance of av.
Journal ArticleDOI
Effect of submerged flexible vegetation on flow structure and resistance
TL;DR: In this article, a new data set of mean velocity profiles and turbulence characteristics is reported from experiments with wheat, and a new definition for the shear velocity based on the deflected plant height is suggested, which enhances the practical applicability of the approach.
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