Floating breakwaters are a suitable alternative to fixed base breakwaters in the field of cost reduction, use in deep waters, environmental protection and maintaining the water connection between the sea and the port. which today has various functions in various fields due to the reasons stated above; But due to the lack of proper performance of this structure in above wave periods, such structures cannot be used in deep ocean waters. Therefore, a lot of research has been done on such structures all over the world in order to improve the performance of floating breakwaters and to use this type of structure in deep waters with high wave periods. This research also tries to improve the performance of the rectangular floating breakwater (BOX), which is the most widely used floating breakwater structure, and increase the range of its performance period. Therefore, to realize this, the desired rectangular floating breakwater structures have been modeled in SOLIDWORK software and then analyzed and examined in three separate sections by ANSYS AQWA software.
In the first part, the influence of radiation wave height against waves with a period of (3 to 5) seconds and the height of the waves (0.3, 0.6, 1, 1.5) meters has been investigated, the results of which showed, The effect of the wave height on the wave attenuation performance of the structure is relatively the same and it can be said that the wave height has no effect on the wave transmission coefficient of the floating breakwater structure.
In the second part of the modeling, the effect of changing the geometric shape of the sections by considering 12 different cross-section designs in the case of single and double-row breakwaters and the effect of the mass of the structure on the performance of the floating breakwater against waves with a height of 1 meter and a period of ( 3 to 10) Sec is paid, The results of this section showed that the cross-section of the floating breakwater has an effect of up to 35% on the perf