Parallel multi-scale-simulations with octrees and coupled applications

Aero-acoustic phenomena pose a multi-scale problem. To tackle this class of problems, a general coupling tool for structured and unstructured meshes is first parallelized to scale on thousands of processes. However, as there remains a principle bottleneck in the treatment of meshes with this approach, an entirely new framework on the basis of octrees is then developed. This restriction in the mesh representation allows for fully parallel simulations of arbitrary large setups.