This is not the latest version of this item. The latest version can be found here.
Evolution of flow velocity from the leading edge of 2-D and 3-D submerged canopies
Name
Liu.Nepf.2021.3DCanopy.Final.Before.Press.pdf
Description
Accepted version
Size
33.09 MB
Format
Adobe PDF
Checksum (MD5)
7bf65c86b75c8d9d886a2125575aea44
Author(s)
Lei, Jiarui
Nepf, H
Date Issued
2021
Journal
Journal of Fluid Mechanics
Publisher
Cambridge University Press (CUP)
Citation
Lei, Jiarui and Nepf, H. 2021. "Evolution of flow velocity from the leading edge of 2-D and 3-D submerged canopies." Journal of Fluid Mechanics, 916.
Version
Author's final manuscript
Abstract
An analytical model was developed to predict the velocity evolution within a submerged canopy of finite width and used to explore the impact of plant flexibility and width on the velocity within the canopy. The analytical model was validated with laboratory experiments using canopies constructed from rigid cylinders and from individual model seagrass plants, consisting of six LDPE (low-density polyethylene) blades attached to a rigid sheath. Four canopy widths were considered, spanning 12.8 to 100 % of the channel width. As the canopy narrowed from the channel width (two-dimensional canopy) to finite width (12.8 % of the channel width), the velocity adjusted more rapidly at the leading edge and reached a lower fully developed in-canopy velocity. Predictions from the analytical model had good agreement with field and laboratory studies with real vegetation. Once validated, the model was applied to a range of field conditions to predict the within-canopy flow velocity and the adjustment length, which is the distance required for the flow to be fully developed.
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
10.1017/JFM.2021.197
