Analysis Of Fluid Structural Interaction

Fluid-structure interaction problems describe the coupled dynamics of fluid mechanics and structure mechanics. They are classical multi-physics problems. The interactions between incompressible fluid flows and immersed structures are nonlinear multi-physics phenomena that have applications to a wide range of scientific and engineering disciplines. Examples for fluid-structure interaction exist in many engineering applications. In Aerodynamics the simulation of the aero dynamical properties of planes is the classical computational fluid dynamics (CFD) problem. To estimate the forces, drag- or lift-values, of a given configure ration, simulations are inevitable. For an accurate simulation however, the deformation of the plane under the aero dynamical forces has to be taken into account, since this deformation alters the shape of the plane and thus changes the aero dynamical behaviour. In Bio-engineering for a better understanding of the flow of blood (hemodynamic) in vessels or in the heart, simulations are the only way to obtain data. The walls of the blood vessels are highly elastic and deformed under the pulsating blood flow. Further, the flow itself is driven by the contraction of the heart muscles, that is, by the deformation of the structure surrounding the flow domain.