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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 45
Edited by: B.H.V. Topping
Paper V.5

A Comparison of Parallel Algorithms for the Numerical Simulation of Multiphase Flows

E. Wassen, Th. Frank and Q. Yu

Faculty of Mechanical Engineering, Technical University of Chemnitz-Zwickau, Chemnitz, Germany

Full Bibliographic Reference for this paper
E. Wassen, Th. Frank, Q. Yu, "A Comparison of Parallel Algorithms for the Numerical Simulation of Multiphase Flows", in B.H.V. Topping, (Editor), "Advances in Computational Mechanics for Parallel and Distributed Processing", Civil-Comp Press, Edinburgh, UK, pp 179-185, 1997. doi:10.4203/ccp.45.5.5
Two parallel algorithms for the Lagrangian simulation of disperse multiphase flows are presented and compared. The first algorithm is based on the domain decomposition method which is widely used for the parallel computation of fluid flows. The numerical grid is divided in partitions. All particle trajectories that cross a certain partition are calculated by the same processor. In the second parallelization method there is no fixed relation between a processor and a grid partition. Each processor can calculate trajectories in any part of the flow geometry. Therefore a complex memory management is established. The results of the test case calculations show that for the second method the load balancing is much better and the total computing time much lower than for the first.

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