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arXiv · 2412.03041

Tree Code Based Neighborhood Algorithms for Discrete Element Methods

Yuki Watanabe·Dominik Krengel·Hans-Georg Matuttis
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Abstract

We report our experiences for the development of a neighborhood algorithm implemented via tree-codes to optimize the performance of a discrete element method (DEM) for convex polytopes. Our implementation of the two-dimensional tree code needs $N\log N$, as does the sort and sweep approach. For our choice of boundary conditions (a rotating drum) and system sizes (up to several thousand particles), the performance of the tree-code is slightly better, but the algorithm is considerably more complicated than the sort and sweep approach.

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Yuki Watanabe, Dominik Krengel, Hans-Georg Matuttis. 2024-12-04. Tree Code Based Neighborhood Algorithms for Discrete Element Methods. https://arxiv.org/abs/2412.03041

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