Sarkar, Abhijit2021-08-202023-10-202021-08-202023-10-202020ROLL NO.156123013https://gyan.iitg.ac.in/handle/123456789/1928Supervisor: Swaroop Nandan BoraPorous structures reduce the waveload and wave run-up on coastal structures. These structures are very flexible, reusanle and can be develop low cost wave attenuation ADN protection systems. By applying boundary conditions, appropriate matching condition which ensure the continuity of pressure and velocity for diffraction problems, a set of values of hydrodynamic coefficient moment wave run up are obtained for different radii, different draft, different porosity for different problems, investigation is taken up in order to examine the influence of submerged depth, radii, porous coefficient and water depth on added mass and damping coefficient.enMATHEMATICSThesis