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Runup and Rundown characteristics of an emerged seaside perforated quarter circle breakwater

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Quarter circle breakwater (QBW) is developed from semicircular breakwater (SBW) and the first model was
developed in Peoples Republic of China. The superstructure of QBW consists of a quarter circular front wall facing
incident waves, a horizontal base slab and a vertical rear wall placed on rubble mound foundation. A series of
experiments were conducted in a two dimensional regular wave flume available in Marine structures laboratory of
Department of Applied Mechanics and Hydraulics of National Institute of Technology, Surathkal, Karnataka to
assess the wave runup and wave rundown characteristics of an emerged seaside perforated quarter circle breakwater.
Quarter-circle breakwater models with three different radii and S/D (spacing to diameter of perforations) ratio equal
to 5 were tested. The data collected was analyzed by plotting the graph of dimensionless wave run up, Ru/Hi (where
Ru= runup and Hi= incident wave height) and dimensionless wave rundown, Rd/ Hi (where Rd = wave rundown and
Hi= incident wave height) for various values of wave steepness, Hi/gT2 and different height of structure to the depth
of water (hs/d) values. The dimensionless wave runup, Ru/Hi increases with the increase in the wave steepness and
also it increases with the increase in hs/d but the dimensionless wave rundown, Rd/Hi decreases with the increase in
the wave steepness and also it decreases with the increase in hs/d.

Keywords: Quarter circle breakwater ; Perforations ; Wave runup ; Wave rundown ; Wave steepness.

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Informasi Detail

Judul Seri

Aquatic Procedia

No. Panggil

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Penerbit

: Elsevier., 2015

Deskripsi Fisik

Aquatic Procedia 4 ( 2015 ) 234 – 239

Bahasa

English

ISBN/ISSN

doi: 10.1016/j.aqpro

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

-

Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

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