Simulation of bidirectional Fluid-Structure Interaction based on explicit coupling approaches of Lattice Boltzmann and p-Fem solvers

In the last few years the Lattice Boltzmann method which has been derived from kinetic theory, has matured as an efficient approach to solve the Navier-Stokes equations in the limit of small Mach numbers. In our approach we couple a LB-solver for fluid flow based on unstructured quadtree/octree Eulerian grids with a p-FEM-solver for structure mechanics based on a Lagrangian description to predict bidirectional fluid-structure interaction. After a brief introduction of the fundamental concepts of the Lattice Boltzmann method and the p-Version of the Finite Element Method, the coupling algorithm is presented. Due to the underlying Eulerian LB-grid, problems with regard to the activation/ deactivation of fluid nodes in case of moving structures are discussed and some solution strategies are indicated.     «

In the last few years the Lattice Boltzmann method which has been derived from kinetic theory, has matured as an efficient approach to solve the Navier-Stokes equations in the limit of small Mach numbers. In our approach we couple a LB-solver for fluid flow based on unstructured quadtree/octree Eulerian grids with a p-FEM-solver for structure mechanics based on a Lagrangian description to predict bidirectional fluid-structure interaction. After a brief introduction of the fundamental concepts of...     »