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Civil-Comp Proceedings
ISSN 1759-3433 CCP: 45
ADVANCES IN COMPUTATIONAL MECHANICS FOR PARALLEL AND DISTRIBUTED PROCESSING 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 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
Abstract
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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