Eulerian flow velocities in the swash zone : Field data and model predictions

Content Provider	Semantic Scholar
Author	Hughes, Michael M. G.
Copyright Year	2004
Abstract	[1] Measurements of Eulerian flow velocity obtained within the swash zone on a relatively steep beach face (gradient 1:23) are compared with an extended ballistic swash model. The model only requires a friction factor, beach slope and terminal bore velocity as input. The following model predictions matched well with observations: (1) The maximum Eulerian flow velocity is the shoreline velocity when it arrives at the fixed point of interest on the beach face; (2) at any location the time of flow reversal occurs prior to the shoreline reaching its maximum landward excursion; (3) the maximum flow velocity in the backwash is the velocity recorded as the shoreline recedes past the fixed point of interest (and this is less than the maximum uprush velocity); and (4) the duration of the uprush flow is shorter than the duration of the backwash flow. Previous studies have already confirmed that the ballistic swash model (including friction) can accurately predict shoreline motion and maximum run-up on steep beaches. This study shows that it is similarly successful in predicting Eulerian flow velocities during individual swash events. The model does not presently account for interacting swash, however, and so may be less appropriate on gently sloping beaches.
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Alternate Webpage(s)	https://espace.library.uq.edu.au/data/UQ_8782/hughes04.pdf?Expires=1505327884&Key-Pair-Id=APKAJKNBJ4MJBJNC6NLQ&Signature=N8LaXheW3TF8Qbje9bMip5-MXGHdwNJaESNJAfbfl7N1FjNGjMhNoVYtSuTTFyzGobD-uMd6Qu3KtGiTM91j0fJ13z1dMIcHEh~yso0VtHbPcpUcqE234L2LdnP1rqu~e4Qi0WdnM0tjiniHdYOkcTzs7RkAZz0QaglpatqlyeuT5qbCNLsC3qjfBTD4GxV0a6kCk8avFTyPCtHU6z1~Qh0fXPrGnN2BIbL2sDra3nfv4YXQbj6IG8JFyXLweYI1hIYrKwIQSj440C4cSiD30nuRxven3rcAE-n9gBpfF-PCNdNzuPVp8zllpFiBU-87YAkKZwqQiR7gJzX92XajnQ__
Language	English
Access Restriction	Open
Subject Keyword	Arabic numeral 0 Displacement mapping Fixed point (mathematics) Fixed-Point Number Friction Gradient Interaction Inverse kinematics Lagrangian and Eulerian specification of the flow field Less Than Mandibular right second molar tooth Maximum flow problem Point of interest Psychologic Displacement Reaching Time series Velocity (software development) slope
Content Type	Text
Resource Type	Article