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Dec 31, 2015
Longshore Current Instabilities: Growth to Finite Amplitude
Authors: Nicholas Dodd and Edward B. ThorntonAuthor Affiliations
Publication: Coastal Engineering 1992
Abstract
The growth of shear instabilities in the longshore current to finite amplitude is studied. It is shown, by considering near-critical conditions and the self-interaction of the fastest growing mode (FGM), that the basic flow is supercritical and that, therefore, the disturbance may be expected to evolve to a finite size, with frequency equal to that predicted by linear stability theory, and final amplitude proportional to the linear growth rate. This is consistent with observation. The mean flow may therefore also be expected to evolve to a new form.
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Published In
Coastal Engineering 1992
Pages: 2655 - 2668
Copyright
© 1993 American Society of Civil Engineers.
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Published online: Dec 31, 2015
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Nicholas Dodd
Institute for Marine and Atmospheric Research, Utrecht University, Princetonplein 5, 3584 CC, Utrecht, The Netherlands.
Edward B. Thornton
Oceanography Department, Naval Postgraduate School, Monterey, CA 93943, U.S.A.
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