Multidisciplinary Simulations with the Coupling Library MpCCI

Extreme high demands on designing accurate prototypes for example in the fields of medical research, aircraft construction, shipbuilding and automotive industry require multidisciplinary simulations. A large number of tools for monodisciplinary simulations are available today. Each of these provides high quality simulation results in a specific physical domain. Now there is also a solution to do multidisciplinary computations: Parallel monodisciplinary codes are coupled with the Mesh based parallel Code Coupling Interface MpCCI to solve multidisciplinary problems with a loose coupled approach. The paper presents applications in the framework of fluid-structure interaction, which demonstrate the advantages of the parallel coupling library for this kind of problems. The computational fluid dynamics code FLOWer developed at the Institute of Design Aerodynamics/DLR and the structural mechanics code SIMPACK developed at the Institute of Aeroelasticity/DLR are coupled to solve an aeroelastic test problem. The applicability of the coupling library in the field of aeroelasticity is strongly dependent on the integrated interpolations between the involved meshes. In the Institute of Aeroelasticity the aeroelastic analysis tool CAESAR was developed which includes aeroelasticity specific interpolation algorithms. These routines are integrated in MpCCI via a special interface. There are two types of interpolation routines included. The first kind of algorithms is based on the method of finite interpolation elements and the second uses radial basis functions.