Abstract
This paper presents a comparison of numerical and empirical methods routinely applied by practitioners to examine wave penetration in the lee of a breakwater, using a case study of a breakwater which is planned for Entrance Point, Broome in the northwest of Australia. Wave conditions representative of ambient and extreme conditions were determined from measured data captured directly offshore of the site, and an extreme cyclone metocean study (Baird, 2020). For ambient and extreme tropical cyclone conditions, waves are typically short crested at a peak period of between 4 seconds to 8 seconds. To examine the effectiveness of the offshore breakwater, empirical methods (Goda, 2000), a phase-averaged model (SWAN) and two phase-resolving model systems– the 2D Boussinesq wave model (MIKE21BW) and 3D non-hydrostatic model (MIKE3-Wave FM) - were applied.References
Baird (2020). Broome Boating Facility Coastal Processes Report. 13111.101.R2.Rev1. 15 Dec 2020
Goda (2000). Random Seas and Design of Maritime Structures. Advanced Series on Ocean Engineering –Volume 15. World Scientific, Singapore.
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Copyright (c) 2023 Jim Churchill, David Taylor, Sean Garber