Document Type : Original Manuscript
Authors
Department of Offshore Structures, Faculty of Marine Engineering, Khorramshahar University of Marine Science and Technology, Khorramshahar , Iran.
Abstract
Overtopping and diffractin of waves are among the hydrodynamic reactions to shore protection structures, which can interfere with the operation and unrest of ports. In order to reduce the effect of hydrodynamic reactions on the coast, in this research, using flow 3D software and numerical modeling, the effect of constructing a submerged breakwater in front of rubble mound breakwater and changes in geometric parameters including structural slope, constructtion distans, the depth of submerged and the type of armor has been addressed. The non-linear waveforms with the Jonswap spectrum and the number of modes examined are 72 different models. The outputs from modeling were analyzed after drawing tables and shapes. The results showed that decreasing the gradient of the structure and the depth of submergence and increasing the distance between the constructions of the submerged breakwater has the greatest effect on the decrease of the Overtopping and diffractin of the waves. Also, tetrapod type armored vehicles in the submerged breakwater have the highest reduction in Overtopping and diffractin of waves in rubble mound breakwater in comparison to cubic and antifer armor.
Keywords
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