The interaction of fluids with mechanical systems – known as fluid-structure interaction (FSI) – plays an important role in a variety of scientific fields and applications in engineering and industry. Examples for FSI range from the interaction of the aortic valves with the blood stream in the human heart to the motion of offshore oil platforms on rough sea.
Due to the complexity of typical FSI problems and difficulties or limitations in the context of analytical and experimental techniques there is a need for versatile numerical methods to enable simulation-based investigations.
The computational approach to FSI in the present work is based on the coupling of flexible multibody systems with fluids modeled by means of the meshfree method “smoothed particle hydrodynamics” (SPH). The focus of the thesis is on the development of a consistent formulation of wall boundary conditions for SPH which adequately captures the interaction between fluid and structural interfaces.