Gravity Currents in Aquatic Canopies
Name
WRR-Gravity Currents.pdf
Size
415.83 KB
Format
Adobe PDF
Checksum (MD5)
5a30299fb9e6993d12f8c5704c65086f
Author(s)
Tanino, Yukie
Nepf, Heidi
Kulis, P. S.
Date Issued
December 2005
Journal
Water Resources Research
Publisher
American Geophysical Union
Citation
Tanino, Y., H. M. Nepf, and P. S. Kulis. “Gravity currents in aquatic canopies.” Water Resources Research 41.12 (2005): p.1-9.
Version
Author's final manuscript
Abstract
A lock exchange experiment is used to investigate the propagation of gravity currents through a random array of rigid, emergent cylinders which represents a canopy of aquatic plants. As canopy drag increases, the propagating front varies from the classic profile of an unobstructed gravity current to a triangular profile. Unlike the unobstructed lock exchange, the gravity current in the canopy decelerates with time as the front lengthens. Two drag-dominated regimes associated with linear and nonlinear drag laws are identified. The theoretical expression for toe velocity is supported by observed values. Empirical criteria are developed to predict the current regime from the cylinder Reynolds number and the array density.
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike 3.0
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DOI of Published Version
https://doi.org/10.1029/2005WR004216
