Wave transformation by a perforated free surface semicircular breakwater in irregular waves

• Main Authors: Teh, Hee Min, Venugopal, Vengatesan
• Other Authors: Chang, Shuenn-Yih
• Format: Book Section
• Published: CRC Press/Balkema 2013
• Subjects: TC Hydraulic engineering. Ocean engineering; TA Engineering (General). Civil engineering (General)
• Online Access: http://eprints.utp.edu.my/8633/1/CEBM_2012.pdf; http://eprints.utp.edu.my/8633/
• Institution: Universiti Teknologi Petronas

This study investigate wave-structure interactions of a free surface semicircular breakwater in irregular waves using physical modeling. The hydraulic performance of the breakwater is evaluated in the forms of transmission, reflection and energy dissipation coefficients. Wave climate near the test model is also recorded and expressed in the form of wave disturbance coefficient. These hydraulic coefficients are evaluated with respect to the wave scattering parameter, relative breakwater immersion depth, wave steepness and wave spectrum type. The experimental results showed that the perforated free surface breakwater is an effective wave dissipater with low reflectivity.