Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-13T01:37:01.727Z Has data issue: false hasContentIssue false
  • English
  • Français

Topographically controlled, breaking-wave-induced macrovortices. Part 2. Changing geometries

Published online by Cambridge University Press:  19 July 2006

A. B. KENNEDY ,
M. BROCCHINI ,
L. SOLDINI  and
E. GUTIERREZ
A. B. KENNEDY
Affiliation:
Department of Civil & Coastal Engineering, University of Florida, Gainesville, FL 32611-6590, USA
M. BROCCHINI
Affiliation:
D.I.Am., Università di Genova, 16145 Genova, Italy
L. SOLDINI
Affiliation:
Istituto di Idraulica e Infrastrutture Viarie, Università Politecnica delle Marche, 60131 Ancona, Italy
E. GUTIERREZ
Affiliation:
Department of Civil & Coastal Engineering, University of Florida, Gainesville, FL 32611-6590, USA
Get access Rights & Permissions [Opens in a new window]

Abstract

This is the second part of a series examining the behaviour of breaking-wave-induced macrovortices. The first part examined theoretically general behaviours during startup conditions, and gave computational results for macrovortex generation and their evolution on widely spaced breakwaters. In this paper, we extend and test qualitatively and quantitatively some of the basic results of Part 1, in particular the initial longshore vortex transport for a wide range of geometries ranging from narrow rip current topographies to isolated breakwaters. Accounting for the presence of a shoreline is found to be necessary for the representation of longshore vortex transport. Results show vortex motion ranging from strongly offshore in the case of a narrow rip current, to strongly longshore in the case of an isolated breakwater. Even with the significant approximations inherent in the analytical predictions, numerical computations using time-domain Boussinesq-type equations and laboratory experiments confirm the trends. Part 3 examines the horizontal mixing features of wave-induced flows over isolated (single-breakwater configuration) or multiple (rip-current configuration) submerged structures.

Type
Papers
Information
Journal of Fluid Mechanics , Volume 559 , 25 July 2006 , pp. 57 - 80
Copyright
© 2006 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)