Investigating the effect of using coastal barriers as a shear stress factor in weakening waves by using of the 3D numerical model

Abstract

A major part of the globe is made up of seas, rivers, underground waters and oceans, and from those places where a major part of the resources needed by humans comes from these methods and requires engineering constructions, coastal protection is important. . being high Development, sustainable, engineering and selection of the best protection method to organize and stabilize the coast, depend on the sea from the sea. Among the protection methods, we can mention coastal wall structures, which reduce the wave height from the beach by creating damping. In the current research, according to the performance of numerical modeling, laboratory results are used to check the efficiency of Open FOAM software and the k-o SST turbulence model in modeling the individual behavior of the body of the coastal Ivar structure. Considering different conditions in modeling, the total number of 10 tests, 5 in the case of coastal wall structure and 5 without structure in 5 different degrees (6, 7.5, 9, 10.5, 12 cm) and the same conditions (structure height 7.5 cm) was chosen to implement the program. The results showed that the forces have increased compared to the state without the structure, in other words, it can be said that the presence of the structure can be compared to the state without the structure in the depreciation of the experimental force. Since the change of forces to the structures is a function of the height, so it decreases with the increase in the amount of influence.

Keywords

• shear stress
• force absorption
• coast protection
• wave damping
• open foam software