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Analytical model for vertical velocity profiles in flows with submerged shrub-like vegetation
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In this article, an analytical solution for the vertical profiles of the horizontal velocity of channel flow with submerged shrub-like vegetation is investigated, and the velocity distribution of the whole column is determined in tandem with the logarithmic velocity profile above the vegetation.Abstract:
An analytical solution for the vertical profiles of the horizontal velocity of channel flow with submerged shrub-like vegetation is investigated in this paper. At first, a shape function is proposed to fit the diameter change of different types of shrub-like vegetation. Using the momentum theorem and the mixing-length turbulence model, an analytical solution for the vertical profile of the horizontal velocity within the vegetation is obtained. The velocity distribution of the whole column is determined in tandem with the logarithmic velocity profile above the vegetation. The solution is compared with experimental data in excellent agreement. The results show that the flow above the vegetation has a logarithmic velocity profile while the flow within the vegetation is impacted greatly by the shape and density of vegetation. The flows within shrub-like vegetations are non-uniform and vary inversely with the shrub diameter.read more
Citations
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Journal ArticleDOI
Analytical solution for vertical profile of streamwise velocity in open-channel flow with submerged vegetation
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A Depth-averaged Two Dimensional Shallow Water Model to Simulate Flow-rigid Vegetation Interactions
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Journal ArticleDOI
Analytical Models for Velocity Distributions in Compound Channels with Emerged and Submerged Vegetated Floodplains
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TL;DR: In this article, the lateral distributions of depth-averaged velocity in open compound channels with emerged and submerged vegetated floodplains were analyzed based on the analytical solution of the depth-integrated Reynolds-Averaged Navier-Stokes equation with a term to account for the effects of vegetation.
References
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Journal ArticleDOI
Momentum absorption by vegetation
TL;DR: In this paper, measurements were made in a wind-tunnel of the drag on elements of a simply-structured artificial crop, and of the wind profiles above and within the crop.
Journal ArticleDOI
On the displacement height in the logarithmic velocity profile
TL;DR: In this paper, the displacement height of rough-wall boundary layers is defined as the level at which the mean drag on the surface appears to act, which coincides with the average displacement thickness for the shear stress.
Journal ArticleDOI
On inducing equations for vegetation resistance
Martin J. Baptist,Vladan Babovic,J. Rodríguez Uthurburu,Maarten Keijzer,R.E. Uittenbogaard,Arthur E. Mynett,A. Verwey +6 more
TL;DR: In this paper, the authors describe the process of induction of equations for the description of vegetation-induced roughness from several angles, and present a numerical 1-DV k-e turbulence model which includes several important features related to the influence plants exhibit on the flow.
Journal ArticleDOI
Effect of Riparian Vegetation on Flow Resistance and Flood Potential
TL;DR: In this article, an existing hydraulic model is modified to predict stage-discharge curves for channels with nonuniform cross sections, sand and gravel-bed materials, and flexible or non-flexible riparian vegetation.
Journal ArticleDOI
Flow resistance in open channel flows with sparsely distributed bushes
TL;DR: In this article, the vertical distribution of mean velocity and turbulence stress have been measured with laser Doppler anemometry techniques, by means of spatial and time-averaging rules.
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