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Permanent link (DOI): https://doi.org/10.7939/R39G5GS9T

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Gravity currents propagating up a slope. Open Access

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Author or creator
Marleau, L. J.
Flynn, M.R.
Sutherland B.R.
Additional contributors
Subject/Keyword
Viscosity
Free surface
Time series analysis
Flow instabilities
Electric measurements
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
Bottom propagating gravity currents resulting from full- and partial-depth lock-release experiments are investigated as they approach and then propagate up a rising slope. Consistent with the prediction of a WKB-like theory, the gravity current front decelerates in a nearly uniform manner along the slope as 0.112g ′ s(D/H)(2 − D/H), in which g ′ is the reduced gravity, s is the slope, D is the initial lock-fluid height, and H is the ambient fluid height. The shape of the gravity current as it decelerates over relatively steep slopes is found to be self similar with a nearly linear decrease of the head height between the start of the slope and up to 80% of the distance to the nose. Some deviation from self-similar behaviour is found in cases with small s because of the comparatively large volume of fluid in the gravity current tail that flows downslope while the front continues to advance upwards.
Date created
2014
DOI
doi:10.7939/R39G5GS9T
License information

Rights
© 2014 L. J. Marleau et al. This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.
Citation for previous publication
Marleau, L., Flynn, M., and Sutherland B.R., S. (2014). Gravity currents propagating up a slope.. Phys. Fluids, 26(), 046605.
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