Hydrodynamic performance of a free surface semicircular perforated breakwater

Teh, Hee Min and Venugopal, Vengatesan and Bruce, Tom (2010) Hydrodynamic performance of a free surface semicircular perforated breakwater. In: 32nd International Conference on Coastal Engineering, June 30 - July 5, 2010, Shanghai, China.

[img] PDF - Published Version
Restricted to Registered users only


Official URL: http://journals.tdl.org/ICCE/article/view/1112


The increasing importance of the sustainability challenge in coastal engineering has led to the development of free surface breakwaters of various configurations. In this study, the hydrodynamic characteristics of a perforated semicircular free surface breakwater (SCB) are investigated for irregular wave conditions. The hydrodynamic performance of the breakwater is evaluated in the form of transmission, reflection and energy dissipation coefficients, which are then presented as a function of the relative submergence depth (D/d) and the relative breakwater width (B/Lp), where D = the depth of immersion, d = the water depth, B = the breakwater width and Lp = the wavelength corresponding to the peak wave period. It is found that the wave attenuation ability of the SCB model improves with the increase of D/d and B/Lp. The SCB performs better as an energy dissipater than as a wave reflector. Based on the analysis of measured data, some empirical equations are proposed to predict the performance of the breakwater under varying submergence depths. The behaviour of wave transformation around and within the breakwater’s chamber is discussed. Also, the measured horizontal wave forces acting on the SCB are reported.

Item Type:Conference or Workshop Item (Paper)
Subjects:T Technology > TC Hydraulic engineering. Ocean engineering
T Technology > TA Engineering (General). Civil engineering (General)
Departments / MOR / COE:Departments > Civil Engineering
ID Code:7719
Deposited By: Unnamed user with email heemin.teh@petronas.com.my
Deposited On:22 Jun 2012 07:07
Last Modified:19 Jan 2017 08:24

Repository Staff Only: item control page

Document Downloads

More statistics for this item...