Stable and accurate schemes for smoothed dissipative particle dynamics

Gérôme Faure; Gabriel Stoltz

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arXiv · 1707.04232

Stable and accurate schemes for smoothed dissipative particle dynamics

Gérôme Faure·Gabriel Stoltz

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Abstract

Smoothed Dissipative Particle Dynamics (SDPD) is a mesoscopic particle method which allows to select the level of resolution at which a fluid is simulated. The numerical integration of its equations of motion still suffers from the lack of numerical schemes satisfying all the desired properties: energy conservation, parallelizability and stability. The similarities between SDPD and Dissipative Particle Dynamics with Energy conservation (DPDE), which is another coarse-grained model, enable the adaptation of recent numerical schemes developed for DPDE to the SDPD setting. In this article, we introduce a Metropolis step in the integration of the fluctuation/dissipation part of SDPD to improve its stability.

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Gérôme Faure, Gabriel Stoltz. 2017-07-13. Stable and accurate schemes for smoothed dissipative particle dynamics. https://arxiv.org/abs/1707.04232

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