FreeWiHR - Simulation von Metallschäumen

Internally funded project


Project Details

Project leader:
Prof. Dr. Ulrich Rüde
Prof. Dr.-Ing. Carolin Körner


Contributing FAU Organisations:
Lehrstuhl für Informatik 10 (Systemsimulation)
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)

Acronym: FreeWiHR
Start date: 01/01/2003
End date: 31/12/2011


Abstract (technical / expert description):

In the last few years methods, cellular automata (CA) became increasingly popular to simulate the physical phenomena that have to be considered when developing and manufacturing new materials. Among these phenomena are the formation of grain structures or dendrites during solidification. A special CA called Lattice Gas or Lattice Boltzmann Method (LBM) is perfectly suited for modeling flows in complex and time- dependent geometries as they are encountered in the context of metal foams or of composite materials that are manufactured by infiltrating fiber or powder preforms. In both cases, free surfaces have to be modeled and simulated accurately. In the last three years, a new algorithm has been successfully developed by the 'Material Science and Technology Group, University of Erlangen' (WTM) to describe free surfaces in the context of LBM in two dimensions.
Based on these promising techniques, the model will now be extended to three dimensions. This step implies an increase in the computational costs by a factor of about 1000 to 10000. To keep the computational time within reasonable limits the use of high performance computers is mandatory.
The goal of the project is to port the extended model to the super computer Hitachi SR8000-F1 in a cooperation of the 'Material Science and Technology Group' (WTM) and the 'System Simulation Group, University of Erlangen' (LSS).
The research focus of the WTM will be the development of numerical methods that can handle complex surfaces in three dimensions in the context of LBM. On the other hand, the LSS will concentrate its research on implementing and testing data structures to store the surface topology efficiently and are able to exploit the given computer hardware (shared/distributed memory parallelism, adaptive load balancing, cache hierarchy).


Publications

Thürey, N., & Rüde, U. (2009). Stable free surface flows with the lattice Boltzmann method on adaptively coarsened grids. Computing and Visualization in Science, 12(5), 247-263. https://dx.doi.org/10.1007/s00791-008-0090-4
Thürey, N., & Rüde, U. (2008). Stable free surface Flows with the Lattice Boltzmann method on adaptively coarsened grids.
Körner, C., Pohl, T., Rüde, U., Thürey, N., & Hofmann, T. (2004). FreeWiHR --- LBM with Free Surfaces.
Pohl, T., Thürey, N., Deserno, F., Rüde, U., Lammers, P., Wellein, G., & Zeiser, T. (2004). Performance Evaluation of Parallel Large-Scale Lattice Boltzmann Applications on Three Supercomputing Architectures. In Friedrich-Alexander-Universität Erlangen-Nürnberg (Eds.), Supercomputing, 2004: Proceedings of the ACM/IEEE SC2004 Conference (pp. 1-13). Pittsburgh, PA, USA: Institute of Electrical and Electronics Engineers Inc..
De Sterck, H., Markel, R.S., Pohl, T., & Rüde, U. (2003). A Lightweight Java Taskspaces Framework for Scientific Computing on Computational Grids. (pp. 1024-1030).
Wilke, J., Pohl, T., Kowarschik, M., & Rüde, U. (2003). Cache Performance Optimizations for Parallel Lattice Boltzmann Codes. In Euro-Par 2003. Parallel Processing (pp. 441-450). Berlin: Springer.
Pohl, T., Kowarschik, M., Rüde, U., & Wilke, J. (2003). Cache Performance Optimizations for Parallel Lattice Boltzmann Codes in 2D.
Pohl, T., Kowarschik, M., Wilke, J., Iglberger, K., & Rüde, U. (2003). Optimization and Profiling of the Cache Performance of Parallel Lattice Boltzmann Codes. Parallel Processing Letters, 13(4), 549-560. https://dx.doi.org/10.1142/S0129626403001501
Pohl, T., Kowarschik, M., Wilke, J., Iglberger, K., & Rüde, U. (2003). Optimization and Profiling of the Cache Performance of Parallel Lattice Boltzmann Codes in 2D and 3D.
Rüde, U., Thürey, N., Körner, C., & Pohl, T. (2003). Simulation von Metallschaum mittels der Lattice-Boltzmann Methode.

Last updated on 2019-18-03 at 15:26