Hydrodynamics of vegetated channels
Name
Nepf JHR 2012 final revision.pdf
Size
3.38 MB
Format
Adobe PDF
Checksum (MD5)
07ce4a5b1d35a4bdfc2cfbcd575fd4a2
Author(s)
Nepf, Heidi
Date Issued
June 2012
Journal
Journal of Hydraulic Research
Publisher
Taylor & Francis/International Association for Hydro-Environment Engineering and Research
Citation
Nepf, Heidi M. Hydrodynamics of Vegetated Channels. Journal of Hydraulic Research 50, no. 3 (June 2012): 262-279.
Version
Author's final manuscript
Abstract
This paper highlights some recent trends in vegetation hydrodynamics, focusing on conditions within channels and spanning spatial scales from individual blades, to canopies or vegetation patches, to the channel reach. At the blade scale, the boundary layer formed on the plant surface plays a role in controlling nutrient uptake. Flow resistance and light availability are also influenced by the reconfiguration of flexible blades. At the canopy scale, there are two flow regimes. For sparse canopies, the flow resembles a rough boundary layer. For dense canopies, the flow resembles a mixing layer. At the reach scale, flow resistance is more closely connected to the patch-scale vegetation distribution, described by the blockage factor, than to the geometry of individual plants. The impact of vegetation distribution on sediment movement is discussed, with attention being paid to methods for estimating bed stress within regions of vegetation. The key research challenges of the hydrodynamics of vegetated channels are highlighted.
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike 3.0
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1080/00221686.2012.696559
