Perpustakaan Digital ITB

The increasing accuracy requirements in many of todays simulation tasks in science and engineering more and more often entail the need to take into account more than one physical eect. Among the most important and most challenging of such multiphysics problems, with respect to both modelling and computational issues, are uid-structure interactions (FSI), i.e. interactions of some movable or deformable elastic structure with an internal or surrounding uid ow. Fluid-structure interaction problems and multiphysics problems in general are often too complex to solve analytically and so they have to be analyzed by means of experiments or numerical simulation. Two main approaches exist for the simulation of uid-structure interaction problems; Monolithic and Partitioned approaches. In Monolithic approach, the equations governing the ow and the displacement of the structure are solved simultaneously, with a single solver. While in Partitioned approach, the equations governing the ow and the displacement of the structure are solved separately, with two distinct solvers. In this work a structural analysis code to simulate the response of linear elastic structure in FSI was developed. Boundary Element Method (BEM), a numerical technique based on the boundary integral equations of continuum mechanics problems, was adopted to solve the corresponding equation of motion. To obtain the dynamic solutions in BEM, the so-called Dual Reciprocity Method (DRM) was incorporated