Mixing in Straits
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Flow of ocean water through narrow straits contributes substantially to the circulation
of the ocean. The amount of water travelling through straits is not large (compared with
the volume of the ocean) but straits play a role in regulating the density distribution
of the ocean.
Flow through straits is not well resolveed by climate models, but it can be
predicted by theory (internal hydraulic theory). Corrections to hydraulic theory
for factors such as mixing, friction and viscosity. The panels on the right show how
an exchange flow is modified by the addition of mixing in the bottom panel.
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This problem is addressed by a combination of laboratory experiments, numerical
simulation and theoretical development. Relevant publications include:
T. PRASTOWO, R. W. GRIFFITHS, G. O. HUGHES & A. McC. HOGG, (2008).
Mixing in exchange flows through a horizontal constriction.
J. Fluid Mech., 600, 235-244.
[Online copy from JFM]
A. McC. HOGG & G. O. Hughes, (2006).
Shear flow and viscosity in single-layer hydraulics
J. Fluid. Mech. 548, 431-443.
[On-line copy from JFM]
A. ENGQVIST & A. McC. HOGG, (2004).
Unidirectional stratified flow through a non-rectangular channel.
J. Fluid. Mech. 509 , 83-92.
[On-line copy from JFM]
A. McC. HOGG & P. D. KILLWORTH, (2004).
Continuously stratified exchange flow through a contraction in a channel.
J. Fluid. Mech. 499, 257-276.
[On-line copy from JFM]
A. McC. HOGG, K. B. WINTERS & G. N. IVEY, (2001).
Linear Internal waves and the control of stratified exchange flows.
J. Fluid. Mech., 447, 357-375.
[On-line Copy from JFM]
A. M. HOGG, G. N. IVEY & K. B. WINTERS, (2001).
Hydraulics and mixing in controlled exchange flows.
J. Geophys. Res., 106, 959-972. [On-line Copy from JGR]
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