Journal ArticleDOI
Modeling streamwise velocity and boundary shear stress of vegetation-covered flow
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TLDR
In this article, a two-power law expression was adopted to predict the vertical profile of streamwise velocity and the influence of roughness of the floating vegetation patches and channel bed was also analyzed.About:
This article is published in Ecological Indicators.The article was published on 2017-04-16. It has received 15 citations till now. The article focuses on the topics: Shear velocity & Vegetation (pathology).read more
Citations
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Effect of the Number of Leaves in Submerged Aquatic Plants on Stream Flow Dynamics
TL;DR: In this article, the effects of aquatic plants with no leaves, 4 leaves, 8 leaves, and 12 leaves on the mean streamwise velocity, turbulence structure, and Manning's roughness coefficient were investigated.
Journal ArticleDOI
Velocity distribution and turbulence structure of open channel flow with floating-leaved vegetation
Qian Li,Yuhong Zeng,Wei Zha +2 more
TL;DR: In this article, the vertical distribution of streamwise velocity and the turbulence structure of an open channel flow with floating-leaved vegetation through theoretical analysis and laboratory experiments were investigated, and the 3D velocity field was measured by using an acoustic Doppler velocimeter.
Journal ArticleDOI
Editorial: Multi-scale ecological indicators for supporting sustainable watershed management
Yanpeng Cai,Yanpeng Cai,Li Zhang +2 more
TL;DR: In this article, the authors report a number of the latest research related to multi-scale ecological indicators for supporting sustainable watershed management, including inherent mechanism, internal function, management modeling, and ecosystem analysis.
Journal ArticleDOI
Numerical simulation model of vertical velocity distribution in a channel with artificial floating bed
Yu Bai,Yonggang Duan,Wenjun Yue +2 more
TL;DR: In this paper, a two-dimensional Lattice Boltzmann method (LBM) was employed for the simulation of the vertical velocity in a channel with artificial floating bed (AFB), while the drag force of AFB was discretized with a centered scheme.
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Analytical Models of Velocity, Reynolds Stress and Turbulence Intensity in Ice-Covered Channels
TL;DR: In this article, the vertical distributions of velocity, Reynolds stress and turbulence intensity in fully and partially ice-covered channels were analyzed by theoretical methods and laboratory experiments, and the predicted data from the analytical models agree well with the experimental ones.
References
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Journal ArticleDOI
Drag, turbulence, and diffusion in flow through emergent vegetation
TL;DR: In this article, a model is developed to describe the drag, turbulence and diffusion for flow through emergent vegetation, which for the first time captures the relevant underlying physics, and covers the natural range of vegetation density and stem Reynolds' numbers.
Journal ArticleDOI
Measurements of the structure of the Reynolds stress in a turbulent boundary layer
S. S. Lu,William W. Willmarth +1 more
TL;DR: In this article, the velocity at the edge of the viscous sublayer is used as a detector signal for bursts and sweeps, and the scaling of the mean time interval between bursts with outer flow variables is confirmed.
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
Fully developed asymmetric flow in a plane channel
Kemal Hanjalic,Brian Launder +1 more
TL;DR: In this paper, the authors present the results of a detailed experimental examination of fully developed asymmetric flow between parallel planes, which was introduced by roughening one of the planes while the other was left smooth; the ratio of the shear stresses at the two surfaces was typically about 4:1.
A NOTE ON THE CONTRIBUTION OF DISPERSIVE FLUXES TO MOMENTUM TRANSFER WITHIN CANOPIES Research Note
TL;DR: In this paper, the authors show that the dispersive flux terms represent a contribution to momentum transfer arising from spatial correlations of the time-averaged velocity components within a hori- zontal plane embedded in the canopy sublayer.
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