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Efficient numerical simulation of granular matter using the Bottom-To-Top Reconstruction method

Thomas Schwager·Thorsten Poeschel
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Abstract

The numerical simulation of granular systems of even moderate size is a challenging computational problem. In most investigations, either Molecular Dynamics or Event-driven Molecular Dynamics is applied. Here we show that in certain cases, mainly (but not exclusively) for static granular packings, the Bottom-to-top Reconstruction method allows for the efficient simulation of very large systems. We apply the method to heap formation, granular flow in a rotating cylinder and to structure formation in nano-powders. We also present an efficient implementation of the algorithm in C++, including a benchmark.

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Thomas Schwager, Thorsten Poeschel. 2006-11-24. Efficient numerical simulation of granular matter using the Bottom-To-Top Reconstruction method. https://arxiv.org/abs/cond-mat/0611596

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