The Parallel Mesh Deformation of the DLR TAU-Code
Mesh deformation for unstructured grids is usually solved employing algorithms based on a spring analogy or on a linear elasticity analogy. These methods require solving discrete equations for the given grid using iterative methods. The computational effort for these methods is not negligible compared to the effort required by the flow solver. In order to optimise the efficiency of the computational chain for coupled simulations of fluid structure interaction an alternative algebraic method was developed for the DLR TAU-Code. The TAU-Code is parallelized by domain decomposition using the message passing concept based on MPI such that each process works on one partition of the grid only. In order to employ the grid deformation on the grid partitions distributed over the processes, a parallel method is required. This paper describes the parallel grid deformation method and shows its efficiency and robustness for the DLR F6 geometry. Further applications are shown in order to demonstrate the grid deformation for dynamic aeroelastic simulations.
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- Beckert, H. Wendland, Multivariate Interpolation for Fluid-Structure-Interaction Problems using Radial Basis Functions. Aerospace Science and Technology, Art. No. 5125, 2001.Google Scholar
- J. Neumann, G. EInarsson, A. Schütte, Multidisziplinäre Simulation eines rollended, generischen Deltaflügels — Kopplung von Aerodynamik, Flugmechanik und Stiukturdynamik, In: Proceedings, Deutscher Luft-und Raumfahrtkongress 2005, Friedrichshafen, 26.–29. September 2005.Google Scholar
- D. Schwamborn, T. Gerhold, R. Heinrich, The DLR TAU-Code: recent applications in research and industry, Proceedings of ECCOMAS CFD 2006, Egmond aan Zee, Netherlands, 5.–8. September 2006.Google Scholar
- Z. Yang, D.J. Mavriplis, Unstructured dynamic meshes with higher order time integration schemes for the unsteady Navier-Stokes equations, AIAA 2005-1222, 41th AIAA Aerospace Sciences Meeting and Exhibit, January 10–13, 2005/Reno, NV.Google Scholar