On internal hydraulics with entrainment

Authors

Frank Gerdes, Institute of Ocean Sciences, Fisheries and Oceans Canada
Chris Garrett, Institute of Ocean Sciences, Fisheries and Oceans Canada
David Farmer, Institute of Ocean Sciences, Fisheries and Oceans Canada

Document Type

Article

Date of Original Version

1-1-2002

Abstract

The hydraulics of a single layer flow with entrainment is examined with a reduced-gravity model. Expressions are derived for the local change of Froude number and layer thickness as a function of the entrainment velocity. It is shown that entrainment, like friction, acts to force the flow toward criticality, although the layer thickness can increase if the Froude number is smaller than 1/2. For certain Froude numbers the effects of friction and entrainment on the layer thickness and the hydraulic state of the flow are found to be of comparable magnitude.

Publication Title, e.g., Journal

Journal of Physical Oceanography

Volume

32

Issue

3

Citation/Publisher Attribution

Gerdes, Frank, Chris Garrett, and David Farmer. "On internal hydraulics with entrainment." Journal of Physical Oceanography 32, 3 (2002). doi: 10.1175/1520-0485(2002)032<1106:OIHWE>2.0.CO;2.