Wave Attenuation Performance of Improved Wave Suppress System (IWSS)

Wave attenuation performance of Improved Wave Suppress System (IWSS); a floating
breakwater system used to dissipate wave energy, has been studied in this project. For the
first semester, IWSS has been designed and developed to enhance wave attenuation
performance of the existing Wave Suppress System (WSS). Experimental studies have
been carried out for the calibration of wave period, and determination of attenuation
performance of WSS and IWSS in terms of reflection coefficient, Cr, transmission
coefficient, Ct, and loss coefficient, Q in various water depths and stroke adjustments.
From the experimental result and analysis, it is found that WSS is not a good reflector but
indeed a good dissipator, as it is capable in attenuating up to 96% of wave energy. The
results also show that IWSS models produced lower Ct values compared to WSS. The
addition of keel plate underneath IWSS has increased the draft of the structure, thus
enhanced the attenuation performance of the breakwater. It can be concluded that IWSS
with keel plate is a good reflector as it has improved the wave reflection ability. WSS and
IWSS models performed very well in 20 cm water depth and short wave period.
Comparison ofWSS and IWSS models with previous studies indicates that draft and width
has significant effect on the performance of floating breakwater.