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Sains Malaysiana 42(9)(2013): 1301–1310
Hydraulic
Performance of Free Surface Breakwaters: A Review
(Prestasi Hidraulik Pemecah Ombak Permukaan Bebas: Suatu Tinjauan)
H.M. Teh*
Civil Engineering Department, University Teknologi PETRONAS,
Bandar Seri Iskandar
31750 Tronoh, Perak, Malaysia
Diserahkan: 13 Ogos 2012 /Diterima: 25 Januari 2013
ABSTRACT
This paper introduces the concept of free surface breakwaters for
coastal protection. The advantages, limitations and applications of these
breakwaters are discussed. Based on their configurations, free surface
breakwaters have been classified into four types, namely solid-type,
plate-type, caisson-type and multipart-type. Typical designs of the respective
breakwater types are presented and the hydraulic characteristics are reviewed.
In addition, comparisons of hydraulic efficiency of some of the free surface
breakwaters are also addressed in this paper.
Keywords: Energy dissipation; free surface breakwater; wave
attenuation; wave reflection
ABSTRAK
Kertas penyelidikan ini memperkenalkan konsep pemecah ombak permukaan
bebas untuk perlindungan pantai. Kelebihan, batasan dan aplikasi
bagi pemecah ombak dibincangkan. Pemecah ombak permukan bebas ini
telah dikelaskan berdasarkan kepada empat jenis, iaitu jenis konfigurasi
jasad, jenis plat, jenis caisson dan jenis berbilang-bahagian. Reka
bentuk pemecah ombak yang tipikal masing-masing dibentangkan dan
ciri-ciri hidraulik dikaji. Di samping itu, perbandingan kecekapan
hidraulik bagi beberapa jenis pemecah ombak permukan bebas juga
disertakan dalam kertas ini.
Kata kunci: Pantulan ombak;
pelesapan tenaga; pemecah ombak permukaan bebas; pengecilan ombak
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