Large Deformation Fluid-Structure Interaction – Advances in ALE Methods and New Fixed Grid Approaches

Abstract

Abstract. This contribution focusses on computational approaches for fluid structure interaction problems from several perspectives. Common driving force is the desire to handle even the large deformation case in a robust, efficient and straightforward way. In order to meet these requirements main subjects are on the one hand necessary improvements on coupling issues as well as on Arbitrary Lagrangian able fixed grid approaches and start the development of new such approaches. Some numerical examples are provided along the paper.

Partitioned Simulation of Fluid-Structure Interaction

“…However, a fibre-like one-dimensional immersed structure may carry mass, but it occupies no volume in the fluid domain. More recently, the IB method has been extended to allow for structures that occupy finite vol- [196].…”

“…The update of the source term and the velocity could be performed explicitly or implicitly. Generally, however, the structural degrees of freedom are eliminated so that the influence of the structure is represented by velocity-dependent source terms in the momentum equations [196].…”

Wind-structure interaction simulations of ovalling vibrations in silo groups

“…the part of the fluid occupied by the solid, and the structure. Additional fixed grid techniques and extensions of the mentioned techniques have also been developed but are not discussed here [88,204,270,271].…”

“…Wall et al [270] have for instance proposed an overlapping domain decomposition/Chimera-like formulation where a background fixed fluid grid is overlapped by a moving, deformable fluid mesh using the ALE formulation. The moving mesh is connected to the structure and deforms accordingly, as described before.…”

Two-Way Coupling FSI Approach to Inertial Focusing Dynamics Under Dean Flow Patterns in Asymmetric Serpentines

“…FSI models are normally employed in systems in which deformations of a solid structure are expected given their interaction with some fluid [35][36][37][38]. Because of computational restrictions, this method is rarely employed in simulations in which one of its components translates a long distance, e.g., a particle moving through a microfluidic channel.…”